diff --git a/yudao-module-erp/yudao-module-erp-api/src/main/java/cn/iocoder/yudao/module/erp/enums/ErrorCodeConstants.java b/yudao-module-erp/yudao-module-erp-api/src/main/java/cn/iocoder/yudao/module/erp/enums/ErrorCodeConstants.java
index b3133d63d..b368f5509 100644
--- a/yudao-module-erp/yudao-module-erp-api/src/main/java/cn/iocoder/yudao/module/erp/enums/ErrorCodeConstants.java
+++ b/yudao-module-erp/yudao-module-erp-api/src/main/java/cn/iocoder/yudao/module/erp/enums/ErrorCodeConstants.java
@@ -34,6 +34,14 @@ ErrorCode PURCHASE_ORDER_ITEM_RETURN_FAIL_IN_EXCEED = new ErrorCode(1_030_101_00
     ErrorCode PURCHASE_IN_NO_EXISTS = new ErrorCode(1_030_102_004, "生成入库单失败，请重新提交");
     ErrorCode PURCHASE_IN_UPDATE_FAIL_APPROVE = new ErrorCode(1_030_102_005, "采购入库单({})已审核，无法修改");
 
+    // ========== ERP 采购退货（1-030-103-000） ==========
+    ErrorCode PURCHASE_RETURN_NOT_EXISTS = new ErrorCode(1_030_103_000, "采购退货单不存在");
+    ErrorCode PURCHASE_RETURN_DELETE_FAIL_APPROVE = new ErrorCode(1_030_103_001, "采购退货单({})已审核，无法删除");
+    ErrorCode PURCHASE_RETURN_PROCESS_FAIL = new ErrorCode(1_030_103_002, "反审核失败，只有已审核的退货单才能反审核");
+    ErrorCode PURCHASE_RETURN_APPROVE_FAIL = new ErrorCode(1_030_103_003, "审核失败，只有未审核的退货单才能审核");
+    ErrorCode PURCHASE_RETURN_NO_EXISTS = new ErrorCode(1_030_103_004, "生成退货单失败，请重新提交");
+    ErrorCode PURCHASE_RETURN_UPDATE_FAIL_APPROVE = new ErrorCode(1_030_103_005, "采购退货单({})已审核，无法修改");
+
     // ========== ERP 客户（1-030-200-000）==========
     ErrorCode CUSTOMER_NOT_EXISTS = new ErrorCode(1_020_200_000, "客户不存在");
     ErrorCode CUSTOMER_NOT_ENABLE = new ErrorCode(1_020_200_001, "客户({})未启用");
diff --git a/yudao-module-erp/yudao-module-erp-api/src/main/java/cn/iocoder/yudao/module/erp/enums/stock/ErpStockRecordBizTypeEnum.java b/yudao-module-erp/yudao-module-erp-api/src/main/java/cn/iocoder/yudao/module/erp/enums/stock/ErpStockRecordBizTypeEnum.java
index af8c4ded9..559bf4ccf 100644
--- a/yudao-module-erp/yudao-module-erp-api/src/main/java/cn/iocoder/yudao/module/erp/enums/stock/ErpStockRecordBizTypeEnum.java
+++ b/yudao-module-erp/yudao-module-erp-api/src/main/java/cn/iocoder/yudao/module/erp/enums/stock/ErpStockRecordBizTypeEnum.java
@@ -39,6 +39,9 @@ public enum ErpStockRecordBizTypeEnum implements IntArrayValuable {
 
     PURCHASE_IN(70, "采购入库"),
     PURCHASE_IN_CANCEL(71, "采购入库（作废）"),
+
+    PURCHASE_RETURN(80, "采购退货出库"),
+    PURCHASE_RETURN_CANCEL(81, "采购退货出库（作废）"),
     ;
 
     public static final int[] ARRAYS = Arrays.stream(values()).mapToInt(ErpStockRecordBizTypeEnum::getType).toArray();
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/ErpPurchaseReturnController.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/ErpPurchaseReturnController.java
new file mode 100644
index 000000000..4d420836b
--- /dev/null
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/ErpPurchaseReturnController.java
@@ -0,0 +1,165 @@
+package cn.iocoder.yudao.module.erp.controller.admin.purchase;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.iocoder.yudao.framework.common.pojo.CommonResult;
+import cn.iocoder.yudao.framework.common.pojo.PageParam;
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.framework.common.util.collection.MapUtils;
+import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
+import cn.iocoder.yudao.framework.excel.core.util.ExcelUtils;
+import cn.iocoder.yudao.framework.operatelog.core.annotations.OperateLog;
+import cn.iocoder.yudao.module.erp.controller.admin.product.vo.product.ErpProductRespVO;
+import cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns.ErpPurchaseReturnPageReqVO;
+import cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns.ErpPurchaseReturnRespVO;
+import cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns.ErpPurchaseReturnSaveReqVO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseReturnDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseReturnItemDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpSupplierDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.stock.ErpStockDO;
+import cn.iocoder.yudao.module.erp.service.product.ErpProductService;
+import cn.iocoder.yudao.module.erp.service.purchase.ErpPurchaseReturnService;
+import cn.iocoder.yudao.module.erp.service.purchase.ErpSupplierService;
+import cn.iocoder.yudao.module.erp.service.stock.ErpStockService;
+import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.annotation.Resource;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.validation.Valid;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.List;
+import java.util.Map;
+
+import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertMultiMap;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertSet;
+import static cn.iocoder.yudao.framework.operatelog.core.enums.OperateTypeEnum.EXPORT;
+
+@Tag(name = "管理后台 - ERP 采购退货")
+@RestController
+@RequestMapping("/erp/purchase-return")
+@Validated
+public class ErpPurchaseReturnController {
+
+    @Resource
+    private ErpPurchaseReturnService purchaseReturnService;
+    @Resource
+    private ErpStockService stockService;
+    @Resource
+    private ErpProductService productService;
+    @Resource
+    private ErpSupplierService supplierService;
+
+    @Resource
+    private AdminUserApi adminUserApi;
+
+    @PostMapping("/create")
+    @Operation(summary = "创建采购退货")
+    @PreAuthorize("@ss.hasPermission('erp:purchase-return:create')")
+    public CommonResult<Long> createPurchaseReturn(@Valid @RequestBody ErpPurchaseReturnSaveReqVO createReqVO) {
+        return success(purchaseReturnService.createPurchaseReturn(createReqVO));
+    }
+
+    @PutMapping("/update")
+    @Operation(summary = "更新采购退货")
+    @PreAuthorize("@ss.hasPermission('erp:purchase-return:update')")
+    public CommonResult<Boolean> updatePurchaseReturn(@Valid @RequestBody ErpPurchaseReturnSaveReqVO updateReqVO) {
+        purchaseReturnService.updatePurchaseReturn(updateReqVO);
+        return success(true);
+    }
+
+    @PutMapping("/update-status")
+    @Operation(summary = "更新采购退货的状态")
+    @PreAuthorize("@ss.hasPermission('erp:purchase-return:update-status')")
+    public CommonResult<Boolean> updatePurchaseReturnStatus(@RequestParam("id") Long id,
+                                                      @RequestParam("status") Integer status) {
+        purchaseReturnService.updatePurchaseReturnStatus(id, status);
+        return success(true);
+    }
+
+    @DeleteMapping("/delete")
+    @Operation(summary = "删除采购退货")
+    @Parameter(name = "ids", description = "编号数组", required = true)
+    @PreAuthorize("@ss.hasPermission('erp:purchase-return:delete')")
+    public CommonResult<Boolean> deletePurchaseReturn(@RequestParam("ids") List<Long> ids) {
+        purchaseReturnService.deletePurchaseReturn(ids);
+        return success(true);
+    }
+
+    @GetMapping("/get")
+    @Operation(summary = "获得采购退货")
+    @Parameter(name = "id", description = "编号", required = true, example = "1024")
+    @PreAuthorize("@ss.hasPermission('erp:purchase-return:query')")
+    public CommonResult<ErpPurchaseReturnRespVO> getPurchaseReturn(@RequestParam("id") Long id) {
+        ErpPurchaseReturnDO purchaseReturn = purchaseReturnService.getPurchaseReturn(id);
+        if (purchaseReturn == null) {
+            return success(null);
+        }
+        List<ErpPurchaseReturnItemDO> purchaseReturnItemList = purchaseReturnService.getPurchaseReturnItemListByReturnId(id);
+        Map<Long, ErpProductRespVO> productMap = productService.getProductVOMap(
+                convertSet(purchaseReturnItemList, ErpPurchaseReturnItemDO::getProductId));
+        return success(BeanUtils.toBean(purchaseReturn, ErpPurchaseReturnRespVO.class, purchaseReturnVO ->
+                purchaseReturnVO.setItems(BeanUtils.toBean(purchaseReturnItemList, ErpPurchaseReturnRespVO.Item.class, item -> {
+                    ErpStockDO stock = stockService.getStock(item.getProductId(), item.getWarehouseId());
+                    item.setStockCount(stock != null ? stock.getCount() : BigDecimal.ZERO);
+                    MapUtils.findAndThen(productMap, item.getProductId(), product -> item.setProductName(product.getName())
+                            .setProductBarCode(product.getBarCode()).setProductUnitName(product.getUnitName()));
+                }))));
+    }
+
+    @GetMapping("/page")
+    @Operation(summary = "获得采购退货分页")
+    @PreAuthorize("@ss.hasPermission('erp:purchase-return:query')")
+    public CommonResult<PageResult<ErpPurchaseReturnRespVO>> getPurchaseReturnPage(@Valid ErpPurchaseReturnPageReqVO pageReqVO) {
+        PageResult<ErpPurchaseReturnDO> pageResult = purchaseReturnService.getPurchaseReturnPage(pageReqVO);
+        return success(buildPurchaseReturnVOPageResult(pageResult));
+    }
+
+    @GetMapping("/export-excel")
+    @Operation(summary = "导出采购退货 Excel")
+    @PreAuthorize("@ss.hasPermission('erp:purchase-return:export')")
+    @OperateLog(type = EXPORT)
+    public void exportPurchaseReturnExcel(@Valid ErpPurchaseReturnPageReqVO pageReqVO,
+                                    HttpServletResponse response) throws IOException {
+        pageReqVO.setPageSize(PageParam.PAGE_SIZE_NONE);
+        List<ErpPurchaseReturnRespVO> list = buildPurchaseReturnVOPageResult(purchaseReturnService.getPurchaseReturnPage(pageReqVO)).getList();
+        // 导出 Excel
+        ExcelUtils.write(response, "采购退货.xls", "数据", ErpPurchaseReturnRespVO.class, list);
+    }
+
+    private PageResult<ErpPurchaseReturnRespVO> buildPurchaseReturnVOPageResult(PageResult<ErpPurchaseReturnDO> pageResult) {
+        if (CollUtil.isEmpty(pageResult.getList())) {
+            return PageResult.empty(pageResult.getTotal());
+        }
+        // 1.1 退货项
+        List<ErpPurchaseReturnItemDO> purchaseReturnItemList = purchaseReturnService.getPurchaseReturnItemListByReturnIds(
+                convertSet(pageResult.getList(), ErpPurchaseReturnDO::getId));
+        Map<Long, List<ErpPurchaseReturnItemDO>> purchaseReturnItemMap = convertMultiMap(purchaseReturnItemList, ErpPurchaseReturnItemDO::getReturnId);
+        // 1.2 产品信息
+        Map<Long, ErpProductRespVO> productMap = productService.getProductVOMap(
+                convertSet(purchaseReturnItemList, ErpPurchaseReturnItemDO::getProductId));
+        // 1.3 供应商信息
+        Map<Long, ErpSupplierDO> supplierMap = supplierService.getSupplierMap(
+                convertSet(pageResult.getList(), ErpPurchaseReturnDO::getSupplierId));
+        // 1.4 管理员信息
+        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(
+                convertSet(pageResult.getList(), erpStockRecordDO -> Long.parseLong(erpStockRecordDO.getCreator())));
+        // 2. 开始拼接
+        return BeanUtils.toBean(pageResult, ErpPurchaseReturnRespVO.class, purchaseReturn -> {
+            purchaseReturn.setItems(BeanUtils.toBean(purchaseReturnItemMap.get(purchaseReturn.getId()), ErpPurchaseReturnRespVO.Item.class,
+                    item -> MapUtils.findAndThen(productMap, item.getProductId(), product -> item.setProductName(product.getName())
+                            .setProductBarCode(product.getBarCode()).setProductUnitName(product.getUnitName()))));
+            purchaseReturn.setProductNames(CollUtil.join(purchaseReturn.getItems(), "，", ErpPurchaseReturnRespVO.Item::getProductName));
+            MapUtils.findAndThen(supplierMap, purchaseReturn.getSupplierId(), supplier -> purchaseReturn.setSupplierName(supplier.getName()));
+            MapUtils.findAndThen(userMap, Long.parseLong(purchaseReturn.getCreator()), user -> purchaseReturn.setCreatorName(user.getNickname()));
+        });
+    }
+
+}
\ No newline at end of file
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/returns/ErpPurchaseReturnPageReqVO.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/returns/ErpPurchaseReturnPageReqVO.java
new file mode 100644
index 000000000..b9d9d4b0b
--- /dev/null
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/returns/ErpPurchaseReturnPageReqVO.java
@@ -0,0 +1,51 @@
+package cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns;
+
+import cn.iocoder.yudao.framework.common.pojo.PageParam;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
+import org.springframework.format.annotation.DateTimeFormat;
+
+import java.time.LocalDateTime;
+
+import static cn.iocoder.yudao.framework.common.util.date.DateUtils.FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND;
+
+@Schema(description = "管理后台 - ERP 采购退货分页 Request VO")
+@Data
+@EqualsAndHashCode(callSuper = true)
+@ToString(callSuper = true)
+public class ErpPurchaseReturnPageReqVO extends PageParam {
+
+    @Schema(description = "采购单编号", example = "XS001")
+    private String no;
+
+    @Schema(description = "供应商编号", example = "1724")
+    private Long supplierId;
+
+    @Schema(description = "退货时间")
+    @DateTimeFormat(pattern = FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND)
+    private LocalDateTime[] returnTime;
+
+    @Schema(description = "备注", example = "你猜")
+    private String remark;
+
+    @Schema(description = "退货状态", example = "2")
+    private Integer status;
+
+    @Schema(description = "创建者")
+    private String creator;
+
+    @Schema(description = "产品编号", example = "1")
+    private Long productId;
+
+    @Schema(description = "仓库编号", example = "1")
+    private Long warehouseId;
+
+    @Schema(description = "结算账号编号", example = "1")
+    private Long accountId;
+
+    @Schema(description = "采购单号", example = "1")
+    private String orderNo;
+
+}
\ No newline at end of file
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/returns/ErpPurchaseReturnRespVO.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/returns/ErpPurchaseReturnRespVO.java
new file mode 100644
index 000000000..887b5f040
--- /dev/null
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/returns/ErpPurchaseReturnRespVO.java
@@ -0,0 +1,148 @@
+package cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns;
+
+import com.alibaba.excel.annotation.ExcelIgnoreUnannotated;
+import com.alibaba.excel.annotation.ExcelProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.constraints.NotNull;
+import lombok.Data;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Schema(description = "管理后台 - ERP 采购退货 Response VO")
+@Data
+@ExcelIgnoreUnannotated
+public class ErpPurchaseReturnRespVO {
+
+    @Schema(description = "编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "17386")
+    @ExcelProperty("编号")
+    private Long id;
+
+    @Schema(description = "退货单编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "XS001")
+    @ExcelProperty("退货单编号")
+    private String no;
+
+    @Schema(description = "退货状态", requiredMode = Schema.RequiredMode.REQUIRED, example = "2")
+    @ExcelProperty("退货状态")
+    private Integer status;
+
+    @Schema(description = "供应商编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "1724")
+    private Long supplierId;
+    @Schema(description = "供应商名称", example = "芋道")
+    @ExcelProperty("供应商名称")
+    private String supplierName;
+
+    @Schema(description = "结算账户编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "311.89")
+    @ExcelProperty("结算账户编号")
+    private Long accountId;
+
+    @Schema(description = "退货时间", requiredMode = Schema.RequiredMode.REQUIRED)
+    @ExcelProperty("退货时间")
+    private LocalDateTime returnTime;
+
+    @Schema(description = "采购订单编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "17386")
+    private Long orderId;
+    @Schema(description = "采购订单号", requiredMode = Schema.RequiredMode.REQUIRED, example = "XS001")
+    private String orderNo;
+
+    @Schema(description = "合计数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "15663")
+    @ExcelProperty("合计数量")
+    private BigDecimal totalCount;
+    @Schema(description = "最终合计价格", requiredMode = Schema.RequiredMode.REQUIRED, example = "24906")
+    @ExcelProperty("最终合计价格")
+    private BigDecimal totalPrice;
+
+    @Schema(description = "合计产品价格，单位：元", requiredMode = Schema.RequiredMode.REQUIRED, example = "7127")
+    private BigDecimal totalProductPrice;
+
+    @Schema(description = "合计税额，单位：元", requiredMode = Schema.RequiredMode.REQUIRED, example = "7127")
+    private BigDecimal totalTaxPrice;
+
+    @Schema(description = "优惠率，百分比", requiredMode = Schema.RequiredMode.REQUIRED, example = "99.88")
+    private BigDecimal discountPercent;
+
+    @Schema(description = "优惠金额，单位：元", requiredMode = Schema.RequiredMode.REQUIRED, example = "7127")
+    private BigDecimal discountPrice;
+
+    @Schema(description = "定金金额，单位：元", requiredMode = Schema.RequiredMode.REQUIRED, example = "7127")
+    private BigDecimal otherPrice;
+
+    @Schema(description = "本次退款，单位：元", requiredMode = Schema.RequiredMode.REQUIRED, example = "7127")
+    private BigDecimal refundPrice;
+    @Schema(description = "本次欠款，单位：元", requiredMode = Schema.RequiredMode.REQUIRED, example = "666")
+    private BigDecimal debtPrice;
+
+    @Schema(description = "附件地址", example = "https://www.iocoder.cn")
+    @ExcelProperty("附件地址")
+    private String fileUrl;
+
+    @Schema(description = "备注", example = "你猜")
+    @ExcelProperty("备注")
+    private String remark;
+
+    @Schema(description = "创建人", example = "芋道")
+    private String creator;
+    @Schema(description = "创建人名称", example = "芋道")
+    private String creatorName;
+
+    @Schema(description = "创建时间", requiredMode = Schema.RequiredMode.REQUIRED)
+    @ExcelProperty("创建时间")
+    private LocalDateTime createTime;
+
+    @Schema(description = "退货项列表", requiredMode = Schema.RequiredMode.REQUIRED)
+    private List<Item> items;
+
+    @Schema(description = "产品信息", requiredMode = Schema.RequiredMode.REQUIRED)
+    @ExcelProperty("产品信息")
+    private String productNames;
+
+    @Data
+    public static class Item {
+
+        @Schema(description = "退货项编号", example = "11756")
+        private Long id;
+
+        @Schema(description = "采购订单项编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "11756")
+        private Long orderItemId;
+
+        @Schema(description = "仓库编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "3113")
+        private Long warehouseId;
+
+        @Schema(description = "产品编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "3113")
+        private Long productId;
+
+        @Schema(description = "产品单位单位", requiredMode = Schema.RequiredMode.REQUIRED, example = "3113")
+        private Long productUnitId;
+
+        @Schema(description = "产品单价", example = "100.00")
+        private BigDecimal productPrice;
+
+        @Schema(description = "产品数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "100.00")
+        @NotNull(message = "产品数量不能为空")
+        private BigDecimal count;
+
+        @Schema(description = "税率，百分比", example = "99.88")
+        private BigDecimal taxPercent;
+
+        @Schema(description = "税额，单位：元", example = "100.00")
+        private BigDecimal taxPrice;
+
+        @Schema(description = "备注", example = "随便")
+        private String remark;
+
+        // ========== 关联字段 ==========
+
+        @Schema(description = "产品名称", requiredMode = Schema.RequiredMode.REQUIRED, example = "巧克力")
+        private String productName;
+        @Schema(description = "产品条码", requiredMode = Schema.RequiredMode.REQUIRED, example = "A9985")
+        private String productBarCode;
+        @Schema(description = "产品单位名称", requiredMode = Schema.RequiredMode.REQUIRED, example = "盒")
+        private String productUnitName;
+
+        @Schema(description = "库存数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "100.00")
+        private BigDecimal stockCount; // 该字段仅仅在“详情”和“编辑”时使用
+
+    }
+
+}
\ No newline at end of file
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/returns/ErpPurchaseReturnSaveReqVO.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/returns/ErpPurchaseReturnSaveReqVO.java
new file mode 100644
index 000000000..ae258c06a
--- /dev/null
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/returns/ErpPurchaseReturnSaveReqVO.java
@@ -0,0 +1,85 @@
+package cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.constraints.NotNull;
+import lombok.Data;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Schema(description = "管理后台 - ERP 采购退货新增/修改 Request VO")
+@Data
+public class ErpPurchaseReturnSaveReqVO {
+
+    @Schema(description = "编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "17386")
+    private Long id;
+
+    @Schema(description = "结算账户编号", example = "31189")
+    private Long accountId;
+
+    @Schema(description = "退货时间", requiredMode = Schema.RequiredMode.REQUIRED)
+    @NotNull(message = "退货时间不能为空")
+    private LocalDateTime returnTime;
+
+    @Schema(description = "采购订单编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "17386")
+    @NotNull(message = "采购订单编号不能为空")
+    private Long orderId;
+
+    @Schema(description = "优惠率，百分比", requiredMode = Schema.RequiredMode.REQUIRED, example = "99.88")
+    private BigDecimal discountPercent;
+
+    @Schema(description = "其它金额，单位：元", example = "7127")
+    private BigDecimal otherPrice;
+
+    @Schema(description = "本次退款，单位：元", requiredMode = Schema.RequiredMode.REQUIRED, example = "7127")
+    @NotNull(message = "本次退款不能为空")
+    private BigDecimal refundPrice;
+
+    @Schema(description = "附件地址", example = "https://www.iocoder.cn")
+    private String fileUrl;
+
+    @Schema(description = "备注", example = "你猜")
+    private String remark;
+
+    @Schema(description = "退货清单列表")
+    private List<Item> items;
+
+    @Data
+    public static class Item {
+
+        @Schema(description = "退货项编号", example = "11756")
+        private Long id;
+
+        @Schema(description = "采购订单项编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "11756")
+        @NotNull(message = "采购订单项编号不能为空")
+        private Long orderItemId;
+
+        @Schema(description = "仓库编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "3113")
+        @NotNull(message = "仓库编号不能为空")
+        private Long warehouseId;
+
+        @Schema(description = "产品编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "3113")
+        @NotNull(message = "产品编号不能为空")
+        private Long productId;
+
+        @Schema(description = "产品单位单位", requiredMode = Schema.RequiredMode.REQUIRED, example = "3113")
+        @NotNull(message = "产品单位单位不能为空")
+        private Long productUnitId;
+
+        @Schema(description = "产品单价", example = "100.00")
+        private BigDecimal productPrice;
+
+        @Schema(description = "产品数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "100.00")
+        @NotNull(message = "产品数量不能为空")
+        private BigDecimal count;
+
+        @Schema(description = "税率，百分比", example = "99.88")
+        private BigDecimal taxPercent;
+
+        @Schema(description = "备注", example = "随便")
+        private String remark;
+
+    }
+
+}
\ No newline at end of file
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/dataobject/purchase/ErpPurchaseInDO.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/dataobject/purchase/ErpPurchaseInDO.java
index 51dc90f59..5e7ff5947 100644
--- a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/dataobject/purchase/ErpPurchaseInDO.java
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/dataobject/purchase/ErpPurchaseInDO.java
@@ -31,7 +31,7 @@ public class ErpPurchaseInDO extends BaseDO {
     @TableId
     private Long id;
     /**
-     * 销售入库单号
+     * 采购入库单号
      */
     private String no;
     /**
@@ -105,7 +105,7 @@ public class ErpPurchaseInDO extends BaseDO {
     private BigDecimal otherPrice;
 
     /**
-     * 本次收款，单位：元
+     * 本次退款，单位：元
      *
      * refundPrice = totalPrice + otherPrice - debtPrice
      */
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/dataobject/purchase/ErpPurchaseReturnDO.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/dataobject/purchase/ErpPurchaseReturnDO.java
new file mode 100644
index 000000000..0ec4ac6fd
--- /dev/null
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/dataobject/purchase/ErpPurchaseReturnDO.java
@@ -0,0 +1,127 @@
+package cn.iocoder.yudao.module.erp.dal.dataobject.purchase;
+
+import cn.iocoder.yudao.framework.mybatis.core.dataobject.BaseDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.finance.ErpAccountDO;
+import com.baomidou.mybatisplus.annotation.KeySequence;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.*;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+/**
+ * ERP 采购退货 DO
+ *
+ * @author 芋道源码
+ */
+@TableName(value = "erp_purchase_return")
+@KeySequence("erp_purchase_return_seq") // 用于 Oracle、PostgreSQL、Kingbase、DB2、H2 数据库的主键自增。如果是 MySQL 等数据库，可不写。
+@Data
+@EqualsAndHashCode(callSuper = true)
+@ToString(callSuper = true)
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class ErpPurchaseReturnDO extends BaseDO {
+
+    /**
+     * 编号
+     */
+    @TableId
+    private Long id;
+    /**
+     * 采购退货单号
+     */
+    private String no;
+    /**
+     * 退货状态
+     *
+     * 枚举 {@link cn.iocoder.yudao.module.erp.enums.ErpAuditStatus}
+     */
+    private Integer status;
+    /**
+     * 供应商编号
+     *
+     * 关联 {@link ErpSupplierDO#getId()}
+     */
+    private Long supplierId;
+    /**
+     * 结算账户编号
+     *
+     * 关联 {@link ErpAccountDO#getId()}
+     */
+    private Long accountId;
+    /**
+     * 退货时间
+     */
+    private LocalDateTime returnTime;
+
+    /**
+     * 采购订单编号
+     *
+     * 关联 {@link ErpPurchaseOrderDO#getId()}
+     */
+    private Long orderId;
+    /**
+     * 采购订单号
+     *
+     * 冗余 {@link ErpPurchaseOrderDO#getNo()}
+     */
+    private String orderNo;
+
+    /**
+     * 合计数量
+     */
+    private BigDecimal totalCount;
+    /**
+     * 最终合计价格，单位：元
+     *
+     * totalPrice = totalProductPrice + totalTaxPrice - discountPrice
+     */
+    private BigDecimal totalPrice;
+
+    /**
+     * 合计产品价格，单位：元
+     */
+    private BigDecimal totalProductPrice;
+    /**
+     * 合计税额，单位：元
+     */
+    private BigDecimal totalTaxPrice;
+    /**
+     * 优惠率，百分比
+     */
+    private BigDecimal discountPercent;
+    /**
+     * 优惠金额，单位：元
+     *
+     * discountPrice = (totalProductPrice + totalTaxPrice) * discountPercent
+     */
+    private BigDecimal discountPrice;
+    /**
+     * 其它金额，单位：元
+     */
+    private BigDecimal otherPrice;
+
+    /**
+     * 本次退款，单位：元
+     *
+     * refundPrice = totalPrice + otherPrice - debtPrice
+     */
+    private BigDecimal refundPrice;
+    /**
+     * 本次欠款，单位：元
+     */
+    private BigDecimal debtPrice;
+
+    /**
+     * 附件地址
+     */
+    private String fileUrl;
+    /**
+     * 备注
+     */
+    private String remark;
+
+}
\ No newline at end of file
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/dataobject/purchase/ErpPurchaseReturnItemDO.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/dataobject/purchase/ErpPurchaseReturnItemDO.java
new file mode 100644
index 000000000..1e1713277
--- /dev/null
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/dataobject/purchase/ErpPurchaseReturnItemDO.java
@@ -0,0 +1,95 @@
+package cn.iocoder.yudao.module.erp.dal.dataobject.purchase;
+
+import cn.iocoder.yudao.framework.mybatis.core.dataobject.BaseDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.product.ErpProductDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.stock.ErpWarehouseDO;
+import com.baomidou.mybatisplus.annotation.KeySequence;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.*;
+
+import java.math.BigDecimal;
+
+/**
+ * ERP 采购退货项 DO
+ *
+ * @author 芋道源码
+ */
+@TableName("erp_purchase_return_items")
+@KeySequence("erp_purchase_return_items_seq") // 用于 Oracle、PostgreSQL、Kingbase、DB2、H2 数据库的主键自增。如果是 MySQL 等数据库，可不写。
+@Data
+@EqualsAndHashCode(callSuper = true)
+@ToString(callSuper = true)
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class ErpPurchaseReturnItemDO extends BaseDO {
+
+    /**
+     * 编号
+     */
+    @TableId
+    private Long id;
+    /**
+     * 采购退货编号
+     *
+     * 关联 {@link ErpPurchaseReturnDO##getId()}
+     */
+    private Long returnId;
+    /**
+     * 采购订单项编号
+     *
+     * 关联 {@link ErpPurchaseOrderItemDO#getId()}
+     * 目的：方便更新关联的采购订单项的退货数量
+     */
+    private Long orderItemId;
+    /**
+     * 仓库编号
+     *
+     * 关联 {@link ErpWarehouseDO#getId()}
+     */
+    private Long warehouseId;
+    /**
+     * 产品编号
+     *
+     * 关联 {@link ErpProductDO#getId()}
+     */
+    private Long productId;
+    /**
+     * 产品单位单位
+     *
+     * 冗余 {@link ErpProductDO#getUnitId()}
+     */
+    private Long productUnitId;
+
+    /**
+     * 产品单位单价，单位：元
+     */
+    private BigDecimal productPrice;
+    /**
+     * 数量
+     */
+    private BigDecimal count;
+    /**
+     * 总价，单位：元
+     *
+     * totalPrice = productPrice * count
+     */
+    private BigDecimal totalPrice;
+    /**
+     * 税率，百分比
+     */
+    private BigDecimal taxPercent;
+    /**
+     * 税额，单位：元
+     *
+     * taxPrice = totalPrice * taxPercent
+     */
+    private BigDecimal taxPrice;
+
+    /**
+     * 备注
+     */
+    private String remark;
+
+}
\ No newline at end of file
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseInItemMapper.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseInItemMapper.java
index b3a6987e2..9140f9548 100644
--- a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseInItemMapper.java
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseInItemMapper.java
@@ -35,10 +35,10 @@ public interface ErpPurchaseInItemMapper extends BaseMapperX<ErpPurchaseInItemDO
     }
 
     /**
-     * 基于销售订单编号，查询每个销售订单项的入库数量之和
+     * 基于采购订单编号，查询每个采购订单项的入库数量之和
      *
      * @param inIds 入库订单项编号数组
-     * @return key：销售订单项编号；value：入库数量之和
+     * @return key：采购订单项编号；value：入库数量之和
      */
     default Map<Long, BigDecimal> selectOrderItemCountSumMapByInIds(Collection<Long> inIds) {
         if (CollUtil.isEmpty(inIds)) {
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseOrderMapper.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseOrderMapper.java
index 8061c6f0d..01f0303f9 100644
--- a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseOrderMapper.java
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseOrderMapper.java
@@ -45,7 +45,7 @@ public interface ErpPurchaseOrderMapper extends BaseMapperX<ErpPurchaseOrderDO>
         } else if (Objects.equals(reqVO.getReturnStatus(), ErpPurchaseOrderPageReqVO.RETURN_STATUS_ALL)) {
             query.apply("t.return_count = t.total_count");
         }
-        // 可采购出库
+        // 可采购入库
         if (Boolean.TRUE.equals(reqVO.getInEnable())) {
             query.eq(ErpPurchaseOrderDO::getStatus, ErpAuditStatus.APPROVE.getStatus())
                     .apply("t.in_count < t.total_count");
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseReturnItemMapper.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseReturnItemMapper.java
new file mode 100644
index 000000000..2a8011900
--- /dev/null
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseReturnItemMapper.java
@@ -0,0 +1,56 @@
+package cn.iocoder.yudao.module.erp.dal.mysql.purchase;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseReturnItemDO;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import org.apache.ibatis.annotations.Mapper;
+
+import java.math.BigDecimal;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertMap;
+
+/**
+ * ERP 采购退货项 Mapper
+ *
+ * @author 芋道源码
+ */
+@Mapper
+public interface ErpPurchaseReturnItemMapper extends BaseMapperX<ErpPurchaseReturnItemDO> {
+
+    default List<ErpPurchaseReturnItemDO> selectListByReturnId(Long returnId) {
+        return selectList(ErpPurchaseReturnItemDO::getReturnId, returnId);
+    }
+
+    default List<ErpPurchaseReturnItemDO> selectListByReturnIds(Collection<Long> returnIds) {
+        return selectList(ErpPurchaseReturnItemDO::getReturnId, returnIds);
+    }
+
+    default int deleteByReturnId(Long returnId) {
+        return delete(ErpPurchaseReturnItemDO::getReturnId, returnId);
+    }
+
+    /**
+     * 基于采购订单编号，查询每个采购订单项的退货数量之和
+     *
+     * @param returnIds 入库订单项编号数组
+     * @return key：采购订单项编号；value：退货数量之和
+     */
+    default Map<Long, BigDecimal> selectOrderItemCountSumMapByReturnIds(Collection<Long> returnIds) {
+        if (CollUtil.isEmpty(returnIds)) {
+            return Collections.emptyMap();
+        }
+        // SQL sum 查询
+        List<Map<String, Object>> result = selectMaps(new QueryWrapper<ErpPurchaseReturnItemDO>()
+                .select("order_item_id, SUM(count) AS sumCount")
+                .groupBy("order_item_id")
+                .in("return_id", returnIds));
+        // 获得数量
+        return convertMap(result, obj -> (Long) obj.get("order_item_id"), obj -> (BigDecimal) obj.get("sumCount"));
+    }
+
+}
\ No newline at end of file
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseReturnMapper.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseReturnMapper.java
new file mode 100644
index 000000000..716b27574
--- /dev/null
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/purchase/ErpPurchaseReturnMapper.java
@@ -0,0 +1,55 @@
+package cn.iocoder.yudao.module.erp.dal.mysql.purchase;
+
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
+import cn.iocoder.yudao.framework.mybatis.core.query.MPJLambdaWrapperX;
+import cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns.ErpPurchaseReturnPageReqVO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseReturnDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseReturnItemDO;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
+import org.apache.ibatis.annotations.Mapper;
+
+import java.util.List;
+
+/**
+ * ERP 采购退货 Mapper
+ *
+ * @author 芋道源码
+ */
+@Mapper
+public interface ErpPurchaseReturnMapper extends BaseMapperX<ErpPurchaseReturnDO> {
+
+    default PageResult<ErpPurchaseReturnDO> selectPage(ErpPurchaseReturnPageReqVO reqVO) {
+        MPJLambdaWrapperX<ErpPurchaseReturnDO> query = new MPJLambdaWrapperX<ErpPurchaseReturnDO>()
+                .likeIfPresent(ErpPurchaseReturnDO::getNo, reqVO.getNo())
+                .eqIfPresent(ErpPurchaseReturnDO::getSupplierId, reqVO.getSupplierId())
+                .betweenIfPresent(ErpPurchaseReturnDO::getReturnTime, reqVO.getReturnTime())
+                .eqIfPresent(ErpPurchaseReturnDO::getStatus, reqVO.getStatus())
+                .likeIfPresent(ErpPurchaseReturnDO::getRemark, reqVO.getRemark())
+                .eqIfPresent(ErpPurchaseReturnDO::getCreator, reqVO.getCreator())
+                .eqIfPresent(ErpPurchaseReturnDO::getAccountId, reqVO.getAccountId())
+                .likeIfPresent(ErpPurchaseReturnDO::getOrderNo, reqVO.getOrderNo())
+                .orderByDesc(ErpPurchaseReturnDO::getId);
+        if (reqVO.getWarehouseId() != null || reqVO.getProductId() != null) {
+            query.leftJoin(ErpPurchaseReturnItemDO.class, ErpPurchaseReturnItemDO::getReturnId, ErpPurchaseReturnDO::getId)
+                    .eq(reqVO.getWarehouseId() != null, ErpPurchaseReturnItemDO::getWarehouseId, reqVO.getWarehouseId())
+                    .eq(reqVO.getProductId() != null, ErpPurchaseReturnItemDO::getProductId, reqVO.getProductId())
+                    .groupBy(ErpPurchaseReturnDO::getId); // 避免 1 对多查询，产生相同的 1
+        }
+        return selectJoinPage(reqVO, ErpPurchaseReturnDO.class, query);
+    }
+
+    default int updateByIdAndStatus(Long id, Integer status, ErpPurchaseReturnDO updateObj) {
+        return update(updateObj, new LambdaUpdateWrapper<ErpPurchaseReturnDO>()
+                .eq(ErpPurchaseReturnDO::getId, id).eq(ErpPurchaseReturnDO::getStatus, status));
+    }
+
+    default ErpPurchaseReturnDO selectByNo(String no) {
+        return selectOne(ErpPurchaseReturnDO::getNo, no);
+    }
+
+    default List<ErpPurchaseReturnDO> selectListByOrderId(Long orderId) {
+        return selectList(ErpPurchaseReturnDO::getOrderId, orderId);
+    }
+
+}
\ No newline at end of file
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/sale/ErpSaleReturnItemMapper.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/sale/ErpSaleReturnItemMapper.java
index 771a0e904..fdc572964 100644
--- a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/sale/ErpSaleReturnItemMapper.java
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/sale/ErpSaleReturnItemMapper.java
@@ -35,10 +35,10 @@ public interface ErpSaleReturnItemMapper extends BaseMapperX<ErpSaleReturnItemDO
     }
 
     /**
-     * 基于销售订单编号，查询每个销售订单项的出库数量之和
+     * 基于销售订单编号，查询每个销售订单项的退货数量之和
      *
      * @param returnIds 出库订单项编号数组
-     * @return key：销售订单项编号；value：出库数量之和
+     * @return key：销售订单项编号；value：退货数量之和
      */
     default Map<Long, BigDecimal> selectOrderItemCountSumMapByReturnIds(Collection<Long> returnIds) {
         if (CollUtil.isEmpty(returnIds)) {
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/redis/no/ErpNoRedisDAO.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/redis/no/ErpNoRedisDAO.java
index f7a258634..f2e72a4dd 100644
--- a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/redis/no/ErpNoRedisDAO.java
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/dal/redis/no/ErpNoRedisDAO.java
@@ -59,6 +59,10 @@ public class ErpNoRedisDAO {
      * 采购入库 {@link cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseInDO}
      */
     public static final String PURCHASE_IN_NO_PREFIX = "CGRK";
+    /**
+     * 采购退货 {@link cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseReturnDO}
+     */
+    public static final String PURCHASE_RETURN_NO_PREFIX = "CGTH";
 
     @Resource
     private StringRedisTemplate stringRedisTemplate;
@@ -76,7 +80,7 @@ public class ErpNoRedisDAO {
         String key = RedisKeyConstants.NO + noPrefix;
         Long no = stringRedisTemplate.opsForValue().increment(key);
         // 设置过期时间
-        stringRedisTemplate.expire(key, Duration.ofMinutes(1L));
+        stringRedisTemplate.expire(key, Duration.ofDays(1L));
         return noPrefix + String.format("%06d", no);
     }
 
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/service/purchase/ErpPurchaseReturnService.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/service/purchase/ErpPurchaseReturnService.java
new file mode 100644
index 000000000..b8e0ad665
--- /dev/null
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/service/purchase/ErpPurchaseReturnService.java
@@ -0,0 +1,84 @@
+package cn.iocoder.yudao.module.erp.service.purchase;
+
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns.ErpPurchaseReturnPageReqVO;
+import cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns.ErpPurchaseReturnSaveReqVO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseReturnDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseReturnItemDO;
+import jakarta.validation.Valid;
+
+import java.util.Collection;
+import java.util.List;
+
+/**
+ * ERP 采购退货 Service 接口
+ *
+ * @author 芋道源码
+ */
+public interface ErpPurchaseReturnService {
+
+    /**
+     * 创建采购退货
+     *
+     * @param createReqVO 创建信息
+     * @return 编号
+     */
+    Long createPurchaseReturn(@Valid ErpPurchaseReturnSaveReqVO createReqVO);
+
+    /**
+     * 更新采购退货
+     *
+     * @param updateReqVO 更新信息
+     */
+    void updatePurchaseReturn(@Valid ErpPurchaseReturnSaveReqVO updateReqVO);
+
+    /**
+     * 更新采购退货的状态
+     *
+     * @param id 编号
+     * @param status 状态
+     */
+    void updatePurchaseReturnStatus(Long id, Integer status);
+
+    /**
+     * 删除采购退货
+     *
+     * @param ids 编号数组
+     */
+    void deletePurchaseReturn(List<Long> ids);
+
+    /**
+     * 获得采购退货
+     *
+     * @param id 编号
+     * @return 采购退货
+     */
+    ErpPurchaseReturnDO getPurchaseReturn(Long id);
+
+    /**
+     * 获得采购退货分页
+     *
+     * @param pageReqVO 分页查询
+     * @return 采购退货分页
+     */
+    PageResult<ErpPurchaseReturnDO> getPurchaseReturnPage(ErpPurchaseReturnPageReqVO pageReqVO);
+
+    // ==================== 采购退货项 ====================
+
+    /**
+     * 获得采购退货项列表
+     *
+     * @param returnId 采购退货编号
+     * @return 采购退货项列表
+     */
+    List<ErpPurchaseReturnItemDO> getPurchaseReturnItemListByReturnId(Long returnId);
+
+    /**
+     * 获得采购退货项 List
+     *
+     * @param returnIds 采购退货编号数组
+     * @return 采购退货项 List
+     */
+    List<ErpPurchaseReturnItemDO> getPurchaseReturnItemListByReturnIds(Collection<Long> returnIds);
+
+}
\ No newline at end of file
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/service/purchase/ErpPurchaseReturnServiceImpl.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/service/purchase/ErpPurchaseReturnServiceImpl.java
new file mode 100644
index 000000000..1d503178a
--- /dev/null
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/service/purchase/ErpPurchaseReturnServiceImpl.java
@@ -0,0 +1,282 @@
+package cn.iocoder.yudao.module.erp.service.purchase;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.framework.common.util.number.MoneyUtils;
+import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
+import cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns.ErpPurchaseReturnPageReqVO;
+import cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.returns.ErpPurchaseReturnSaveReqVO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.product.ErpProductDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseOrderDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseReturnDO;
+import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseReturnItemDO;
+import cn.iocoder.yudao.module.erp.dal.mysql.purchase.ErpPurchaseReturnItemMapper;
+import cn.iocoder.yudao.module.erp.dal.mysql.purchase.ErpPurchaseReturnMapper;
+import cn.iocoder.yudao.module.erp.dal.redis.no.ErpNoRedisDAO;
+import cn.iocoder.yudao.module.erp.enums.ErpAuditStatus;
+import cn.iocoder.yudao.module.erp.enums.stock.ErpStockRecordBizTypeEnum;
+import cn.iocoder.yudao.module.erp.service.finance.ErpAccountService;
+import cn.iocoder.yudao.module.erp.service.product.ErpProductService;
+import cn.iocoder.yudao.module.erp.service.stock.ErpStockRecordService;
+import cn.iocoder.yudao.module.erp.service.stock.bo.ErpStockRecordCreateReqBO;
+import jakarta.annotation.Resource;
+import org.springframework.context.annotation.Lazy;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.validation.annotation.Validated;
+
+import java.math.BigDecimal;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+
+import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.*;
+import static cn.iocoder.yudao.module.erp.enums.ErrorCodeConstants.*;
+
+// TODO 芋艿：记录操作日志
+
+/**
+ * ERP 采购退货 Service 实现类
+ *
+ * @author 芋道源码
+ */
+@Service
+@Validated
+public class ErpPurchaseReturnServiceImpl implements ErpPurchaseReturnService {
+
+    @Resource
+    private ErpPurchaseReturnMapper purchaseReturnMapper;
+    @Resource
+    private ErpPurchaseReturnItemMapper purchaseReturnItemMapper;
+
+    @Resource
+    private ErpNoRedisDAO noRedisDAO;
+
+    @Resource
+    private ErpProductService productService;
+    @Resource
+    @Lazy // 延迟加载，避免循环依赖
+    private ErpPurchaseOrderService purchaseOrderService;
+    @Resource
+    private ErpAccountService accountService;
+    @Resource
+    private ErpStockRecordService stockRecordService;
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public Long createPurchaseReturn(ErpPurchaseReturnSaveReqVO createReqVO) {
+        // 1.1 校验采购订单已审核
+        ErpPurchaseOrderDO purchaseOrder = purchaseOrderService.validatePurchaseOrder(createReqVO.getOrderId());
+        // 1.2 校验退货项的有效性
+        List<ErpPurchaseReturnItemDO> purchaseReturnItems = validatePurchaseReturnItems(createReqVO.getItems());
+        // 1.3 校验结算账户
+        accountService.validateAccount(createReqVO.getAccountId());
+        // 1.4 生成调拨单号，并校验唯一性
+        String no = noRedisDAO.generate(ErpNoRedisDAO.PURCHASE_RETURN_NO_PREFIX);
+        if (purchaseReturnMapper.selectByNo(no) != null) {
+            throw exception(PURCHASE_RETURN_NO_EXISTS);
+        }
+
+        // 2.1 插入退货
+        ErpPurchaseReturnDO purchaseReturn = BeanUtils.toBean(createReqVO, ErpPurchaseReturnDO.class, in -> in
+                .setNo(no).setStatus(ErpAuditStatus.PROCESS.getStatus()))
+                .setOrderNo(purchaseOrder.getNo()).setSupplierId(purchaseOrder.getSupplierId());
+        calculateTotalPrice(purchaseReturn, purchaseReturnItems);
+        purchaseReturnMapper.insert(purchaseReturn);
+        // 2.2 插入退货项
+        purchaseReturnItems.forEach(o -> o.setReturnId(purchaseReturn.getId()));
+        purchaseReturnItemMapper.insertBatch(purchaseReturnItems);
+
+        // 3. 更新采购订单的退货数量
+        updatePurchaseOrderReturnCount(createReqVO.getOrderId());
+        return purchaseReturn.getId();
+    }
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public void updatePurchaseReturn(ErpPurchaseReturnSaveReqVO updateReqVO) {
+        // 1.1 校验存在
+        ErpPurchaseReturnDO purchaseReturn = validatePurchaseReturnExists(updateReqVO.getId());
+        if (ErpAuditStatus.APPROVE.getStatus().equals(purchaseReturn.getStatus())) {
+            throw exception(PURCHASE_RETURN_UPDATE_FAIL_APPROVE, purchaseReturn.getNo());
+        }
+        // 1.2 校验采购订单已审核
+        ErpPurchaseOrderDO purchaseOrder = purchaseOrderService.validatePurchaseOrder(updateReqVO.getOrderId());
+        // 1.3 校验结算账户
+        accountService.validateAccount(updateReqVO.getAccountId());
+        // 1.4 校验订单项的有效性
+        List<ErpPurchaseReturnItemDO> purchaseReturnItems = validatePurchaseReturnItems(updateReqVO.getItems());
+
+        // 2.1 更新退货
+        ErpPurchaseReturnDO updateObj = BeanUtils.toBean(updateReqVO, ErpPurchaseReturnDO.class)
+                .setOrderNo(purchaseOrder.getNo()).setSupplierId(purchaseOrder.getSupplierId());
+        calculateTotalPrice(updateObj, purchaseReturnItems);
+        purchaseReturnMapper.updateById(updateObj);
+        // 2.2 更新退货项
+        updatePurchaseReturnItemList(updateReqVO.getId(), purchaseReturnItems);
+
+        // 3.1 更新采购订单的出库数量
+        updatePurchaseOrderReturnCount(updateObj.getOrderId());
+        // 3.2 注意：如果采购订单编号变更了，需要更新“老”采购订单的出库数量
+        if (ObjectUtil.notEqual(purchaseReturn.getOrderId(), updateObj.getOrderId())) {
+            updatePurchaseOrderReturnCount(purchaseReturn.getOrderId());
+        }
+    }
+
+    private void calculateTotalPrice(ErpPurchaseReturnDO purchaseReturn, List<ErpPurchaseReturnItemDO> purchaseReturnItems) {
+        purchaseReturn.setTotalCount(getSumValue(purchaseReturnItems, ErpPurchaseReturnItemDO::getCount, BigDecimal::add));
+        purchaseReturn.setTotalProductPrice(getSumValue(purchaseReturnItems, ErpPurchaseReturnItemDO::getTotalPrice, BigDecimal::add, BigDecimal.ZERO));
+        purchaseReturn.setTotalTaxPrice(getSumValue(purchaseReturnItems, ErpPurchaseReturnItemDO::getTaxPrice, BigDecimal::add, BigDecimal.ZERO));
+        purchaseReturn.setTotalPrice(purchaseReturn.getTotalProductPrice().add(purchaseReturn.getTotalTaxPrice()));
+        // 计算优惠价格
+        if (purchaseReturn.getDiscountPercent() == null) {
+            purchaseReturn.setDiscountPercent(BigDecimal.ZERO);
+        }
+        purchaseReturn.setDiscountPrice(MoneyUtils.priceMultiplyPercent(purchaseReturn.getTotalPrice(), purchaseReturn.getDiscountPercent()));
+        purchaseReturn.setTotalPrice(purchaseReturn.getTotalPrice().subtract(purchaseReturn.getDiscountPrice()));
+        // 计算应退金额
+        BigDecimal allPrice = purchaseReturn.getTotalPrice().add(purchaseReturn.getOtherPrice());
+        purchaseReturn.setDebtPrice(allPrice.subtract(purchaseReturn.getRefundPrice()));
+    }
+
+    private void updatePurchaseOrderReturnCount(Long orderId) {
+        // 1.1 查询采购订单对应的采购出库单列表
+        List<ErpPurchaseReturnDO> purchaseReturns = purchaseReturnMapper.selectListByOrderId(orderId);
+        // 1.2 查询对应的采购订单项的退货数量
+        Map<Long, BigDecimal> returnCountMap = purchaseReturnItemMapper.selectOrderItemCountSumMapByReturnIds(
+                convertList(purchaseReturns, ErpPurchaseReturnDO::getId));
+        // 2. 更新采购订单的出库数量
+        purchaseOrderService.updatePurchaseOrderReturnCount(orderId, returnCountMap);
+    }
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public void updatePurchaseReturnStatus(Long id, Integer status) {
+        boolean approve = ErpAuditStatus.APPROVE.getStatus().equals(status);
+        // 1.1 校验存在
+        ErpPurchaseReturnDO purchaseReturn = validatePurchaseReturnExists(id);
+        // 1.2 校验状态
+        if (purchaseReturn.getStatus().equals(status)) {
+            throw exception(approve ? PURCHASE_RETURN_APPROVE_FAIL : PURCHASE_RETURN_PROCESS_FAIL);
+        }
+
+        // 2. 更新状态
+        int updateCount = purchaseReturnMapper.updateByIdAndStatus(id, purchaseReturn.getStatus(),
+                new ErpPurchaseReturnDO().setStatus(status));
+        if (updateCount == 0) {
+            throw exception(approve ? PURCHASE_RETURN_APPROVE_FAIL : PURCHASE_RETURN_PROCESS_FAIL);
+        }
+
+        // 3. 变更库存
+        List<ErpPurchaseReturnItemDO> purchaseReturnItems = purchaseReturnItemMapper.selectListByReturnId(id);
+        Integer bizType = approve ? ErpStockRecordBizTypeEnum.PURCHASE_RETURN.getType()
+                : ErpStockRecordBizTypeEnum.PURCHASE_RETURN_CANCEL.getType();
+        purchaseReturnItems.forEach(purchaseReturnItem -> {
+            BigDecimal count = approve ? purchaseReturnItem.getCount().negate() : purchaseReturnItem.getCount();
+            stockRecordService.createStockRecord(new ErpStockRecordCreateReqBO(
+                    purchaseReturnItem.getProductId(), purchaseReturnItem.getWarehouseId(), count,
+                    bizType, purchaseReturnItem.getReturnId(), purchaseReturnItem.getId(), purchaseReturn.getNo()));
+        });
+    }
+
+    private List<ErpPurchaseReturnItemDO> validatePurchaseReturnItems(List<ErpPurchaseReturnSaveReqVO.Item> list) {
+        // 1. 校验产品存在
+        List<ErpProductDO> productList = productService.validProductList(
+                convertSet(list, ErpPurchaseReturnSaveReqVO.Item::getProductId));
+        Map<Long, ErpProductDO> productMap = convertMap(productList, ErpProductDO::getId);
+        // 2. 转化为 ErpPurchaseReturnItemDO 列表
+        return convertList(list, o -> BeanUtils.toBean(o, ErpPurchaseReturnItemDO.class, item -> {
+            item.setProductUnitId(productMap.get(item.getProductId()).getUnitId());
+            item.setTotalPrice(MoneyUtils.priceMultiply(item.getProductPrice(), item.getCount()));
+            if (item.getTotalPrice() == null) {
+                return;
+            }
+            if (item.getTaxPercent() != null) {
+                item.setTaxPrice(MoneyUtils.priceMultiplyPercent(item.getTotalPrice(), item.getTaxPercent()));
+            }
+        }));
+    }
+
+    private void updatePurchaseReturnItemList(Long id, List<ErpPurchaseReturnItemDO> newList) {
+        // 第一步，对比新老数据，获得添加、修改、删除的列表
+        List<ErpPurchaseReturnItemDO> oldList = purchaseReturnItemMapper.selectListByReturnId(id);
+        List<List<ErpPurchaseReturnItemDO>> diffList = diffList(oldList, newList, // id 不同，就认为是不同的记录
+                (oldVal, newVal) -> oldVal.getId().equals(newVal.getId()));
+
+        // 第二步，批量添加、修改、删除
+        if (CollUtil.isNotEmpty(diffList.get(0))) {
+            diffList.get(0).forEach(o -> o.setReturnId(id));
+            purchaseReturnItemMapper.insertBatch(diffList.get(0));
+        }
+        if (CollUtil.isNotEmpty(diffList.get(1))) {
+            purchaseReturnItemMapper.updateBatch(diffList.get(1));
+        }
+        if (CollUtil.isNotEmpty(diffList.get(2))) {
+            purchaseReturnItemMapper.deleteBatchIds(convertList(diffList.get(2), ErpPurchaseReturnItemDO::getId));
+        }
+    }
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public void deletePurchaseReturn(List<Long> ids) {
+        // 1. 校验不处于已审批
+        List<ErpPurchaseReturnDO> purchaseReturns = purchaseReturnMapper.selectBatchIds(ids);
+        if (CollUtil.isEmpty(purchaseReturns)) {
+            return;
+        }
+        purchaseReturns.forEach(purchaseReturn -> {
+            if (ErpAuditStatus.APPROVE.getStatus().equals(purchaseReturn.getStatus())) {
+                throw exception(PURCHASE_RETURN_DELETE_FAIL_APPROVE, purchaseReturn.getNo());
+            }
+        });
+
+        // 2. 遍历删除，并记录操作日志
+        purchaseReturns.forEach(purchaseReturn -> {
+            // 2.1 删除订单
+            purchaseReturnMapper.deleteById(purchaseReturn.getId());
+            // 2.2 删除订单项
+            purchaseReturnItemMapper.deleteByReturnId(purchaseReturn.getId());
+
+            // 2.3 更新采购订单的出库数量
+            updatePurchaseOrderReturnCount(purchaseReturn.getOrderId());
+        });
+
+    }
+
+    private ErpPurchaseReturnDO validatePurchaseReturnExists(Long id) {
+        ErpPurchaseReturnDO purchaseReturn = purchaseReturnMapper.selectById(id);
+        if (purchaseReturn == null) {
+            throw exception(PURCHASE_RETURN_NOT_EXISTS);
+        }
+        return purchaseReturn;
+    }
+
+    @Override
+    public ErpPurchaseReturnDO getPurchaseReturn(Long id) {
+        return purchaseReturnMapper.selectById(id);
+    }
+
+    @Override
+    public PageResult<ErpPurchaseReturnDO> getPurchaseReturnPage(ErpPurchaseReturnPageReqVO pageReqVO) {
+        return purchaseReturnMapper.selectPage(pageReqVO);
+    }
+
+    // ==================== 采购退货项 ====================
+
+    @Override
+    public List<ErpPurchaseReturnItemDO> getPurchaseReturnItemListByReturnId(Long returnId) {
+        return purchaseReturnItemMapper.selectListByReturnId(returnId);
+    }
+
+    @Override
+    public List<ErpPurchaseReturnItemDO> getPurchaseReturnItemListByReturnIds(Collection<Long> returnIds) {
+        if (CollUtil.isEmpty(returnIds)) {
+            return Collections.emptyList();
+        }
+        return purchaseReturnItemMapper.selectListByReturnIds(returnIds);
+    }
+
+}
\ No newline at end of file
diff --git a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/service/sale/ErpSaleReturnServiceImpl.java b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/service/sale/ErpSaleReturnServiceImpl.java
index eaea5c00e..ae5775551 100644
--- a/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/service/sale/ErpSaleReturnServiceImpl.java
+++ b/yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/service/sale/ErpSaleReturnServiceImpl.java
@@ -157,7 +157,7 @@ public class ErpSaleReturnServiceImpl implements ErpSaleReturnService {
     private void updateSaleOrderReturnCount(Long orderId) {
         // 1.1 查询销售订单对应的销售出库单列表
         List<ErpSaleReturnDO> saleReturns = saleReturnMapper.selectListByOrderId(orderId);
-        // 1.2 查询对应的销售订单项的出库数量
+        // 1.2 查询对应的销售订单项的退货数量
         Map<Long, BigDecimal> returnCountMap = saleReturnItemMapper.selectOrderItemCountSumMapByReturnIds(
                 convertList(saleReturns, ErpSaleReturnDO::getId));
         // 2. 更新销售订单的出库数量