diff --git a/yudao-module-cms/yudao-module-cms-biz/src/main/java/cn/iocoder/yudao/module/cms/service/extContract/ExtContractService.java b/yudao-module-cms/yudao-module-cms-biz/src/main/java/cn/iocoder/yudao/module/cms/service/extContract/ExtContractService.java
new file mode 100644
index 000000000..f457c5f6d
--- /dev/null
+++ b/yudao-module-cms/yudao-module-cms-biz/src/main/java/cn/iocoder/yudao/module/cms/service/extContract/ExtContractService.java
@@ -0,0 +1,63 @@
+package cn.iocoder.yudao.module.cms.service.extcontract;
+
+
+import cn.iocoder.yudao.module.cms.controller.admin.extContract.vo.ExtContractPageReqVO;
+import cn.iocoder.yudao.module.cms.controller.admin.extContract.vo.ExtContractRespVO;
+import cn.iocoder.yudao.module.cms.controller.admin.extContract.vo.ExtContractSaveReqVO;
+import jakarta.validation.*;
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+
+import java.math.BigDecimal;
+
+/**
+ * 外部合同 Service 接口
+ *
+ * @author 管理员
+ */
+public interface ExtContractService {
+
+ /**
+ * 创建外部合同
+ *
+ * @param createReqVO 创建信息
+ * @return 编号
+ */
+ Long createExtContract(@Valid ExtContractSaveReqVO createReqVO);
+
+ /**
+ * 更新外部合同
+ *
+ * @param updateReqVO 更新信息
+ */
+ void updateExtContract(@Valid ExtContractSaveReqVO updateReqVO);
+
+ /**
+ * 删除外部合同
+ *
+ * @param id 编号
+ */
+ void deleteExtContract(Long id);
+
+ /**
+ * 获得外部合同
+ *
+ * @param id 编号
+ * @return 外部合同
+ */
+ ExtContractRespVO getExtContract(Long id);
+
+ /**
+ * 获得外部合同分页
+ *
+ * @param pageReqVO 分页查询
+ * @return 外部合同分页
+ */
+ PageResult<ExtContractRespVO> getExtContractPage(ExtContractPageReqVO pageReqVO);
+
+ /**
+ * 合同总金额
+ * @param id
+ * @return
+ */
+ BigDecimal getContractAmount(Long id);
+}
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diff --git a/yudao-module-cms/yudao-module-cms-biz/src/main/java/cn/iocoder/yudao/module/cms/service/extContract/ExtContractServiceImpl.java b/yudao-module-cms/yudao-module-cms-biz/src/main/java/cn/iocoder/yudao/module/cms/service/extContract/ExtContractServiceImpl.java
new file mode 100644
index 000000000..95d79bdc6
--- /dev/null
+++ b/yudao-module-cms/yudao-module-cms-biz/src/main/java/cn/iocoder/yudao/module/cms/service/extContract/ExtContractServiceImpl.java
@@ -0,0 +1,145 @@
+package cn.iocoder.yudao.module.cms.service.extcontract;
+
+import cn.iocoder.yudao.module.cms.controller.admin.extContract.vo.ExtContractPageReqVO;
+import cn.iocoder.yudao.module.cms.controller.admin.extContract.vo.ExtContractRespVO;
+import cn.iocoder.yudao.module.cms.controller.admin.extContract.vo.ExtContractSaveReqVO;
+import cn.iocoder.yudao.module.cms.dal.dataobject.customerCompany.CustomerCompanyDO;
+import cn.iocoder.yudao.module.cms.dal.dataobject.extContract.ExtContractDO;
+import cn.iocoder.yudao.module.cms.dal.mysql.customerCompany.CustomerCompanyMapper;
+import cn.iocoder.yudao.module.cms.dal.mysql.extContract.ExtContractMapper;
+import cn.iocoder.yudao.module.pms.api.ProjectApi;
+import cn.iocoder.yudao.module.pms.api.project.dto.ProjectDetailRespDTO;
+import cn.iocoder.yudao.module.pms.api.project.dto.ProjectRespDTO;
+import org.springframework.stereotype.Service;
+import jakarta.annotation.Resource;
+import org.springframework.validation.annotation.Validated;
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
+import static cn.iocoder.yudao.module.cms.enums.ErrorCodeConstants.EXT_CONTRACT_NOT_EXISTS;
+
+/**
+ * 外部合同 Service 实现类
+ *
+ * @author 管理员
+ */
+@Service
+@Validated
+public class ExtContractServiceImpl implements ExtContractService {
+
+ @Resource
+ private ExtContractMapper extContractMapper;
+
+ @Resource
+ private ProjectApi projectApi;
+
+ @Resource
+ private CustomerCompanyMapper customerCompanyMapper;
+
+
+ @Override
+ public Long createExtContract(ExtContractSaveReqVO createReqVO) {
+ // 插入
+ ExtContractDO extContract = BeanUtils.toBean(createReqVO, ExtContractDO.class);
+ extContractMapper.insert(extContract);
+ // 返回
+ return extContract.getId();
+ }
+
+ @Override
+ public void updateExtContract(ExtContractSaveReqVO updateReqVO) {
+ //校验
+ Long id = updateReqVO.getId();
+ validateExtContractExists(id);
+ // 更新
+ ExtContractDO updateObj = BeanUtils.toBean(updateReqVO, ExtContractDO.class);
+ extContractMapper.updateById(updateObj);
+ }
+
+ @Override
+ public void deleteExtContract(Long id) {
+ // 校验存在
+ validateExtContractExists(id);
+ // 删除
+ extContractMapper.deleteById(id);
+ }
+
+ private void validateExtContractExists(Long id) {
+ if (extContractMapper.selectById(id) == null) {
+ throw exception(EXT_CONTRACT_NOT_EXISTS);
+ }
+ }
+
+ // 需要联表查询
+ // 1.项目编号 pms_project 直接 √
+ // 2.主控部门(跟踪部门) pms_project找到的是id 需要联表 √
+ // 3.项目经理 pms_project找到的是id 需要联表 √
+ // 4.客户公司名称 pms_project 联表 √
+ // 5.合同总金额 √
+ // 6.合同商议提示（和分包提示不一样）
+ @Override
+ public ExtContractRespVO getExtContract(Long id) {
+ ExtContractDO extContractDO = extContractMapper.selectById(id);
+ Long projectId = extContractDO.getProjectId();
+ Long customerCompanyId = extContractDO.getCustomerCompanyId();
+ ExtContractRespVO extContractRespVO = BeanUtils.toBean(extContractDO, ExtContractRespVO.class);
+
+
+ ProjectRespDTO project = projectApi.getProject(projectId);
+ extContractRespVO.setCode(project.getCode());
+
+
+ ProjectDetailRespDTO projectDetail = projectApi.getProjectDetailById(projectId);
+ extContractRespVO.setTrackingDep(projectDetail.getTrackingDepName());
+ extContractRespVO.setProjectManager(projectDetail.getProjectManagerName());
+
+ //用客户公司id查询
+ CustomerCompanyDO customerCompanyDO = customerCompanyMapper.selectById(customerCompanyId);
+ String name = customerCompanyDO.getName();
+ extContractRespVO.setCustomerCompanyName(name);
+
+
+ //合同总金额
+ BigDecimal contractAmount = getContractAmount(id);
+ extContractRespVO.setAmount(contractAmount);
+
+
+ return extContractRespVO;
+ }
+
+ @Override
+ public PageResult<ExtContractRespVO> getExtContractPage(ExtContractPageReqVO pageReqVO) {
+
+ PageResult<ExtContractDO> extContractDOPageResult = extContractMapper.selectPage(pageReqVO);
+ List<ExtContractDO> excontractDOList = extContractDOPageResult.getList();
+ List<ExtContractRespVO> extContractRespVOList = new ArrayList<>();
+
+
+ for (ExtContractDO extContractDO : excontractDOList) {
+ Long id = extContractDO.getId();
+ ExtContractRespVO extContractRespVO = getExtContract(id);
+ extContractRespVOList.add(extContractRespVO);
+ }
+ PageResult<ExtContractRespVO> pageResult = new PageResult<>();
+ pageResult.setList(extContractRespVOList);
+ return pageResult;
+ }
+
+ @Override
+ public BigDecimal getContractAmount(Long id) {
+ //前期+设计+地勘+其他+检测
+ ExtContractDO extContract = extContractMapper.selectById(id);
+ BigDecimal preAmount = new BigDecimal(String.valueOf(extContract.getPreAmount()));
+ BigDecimal designFee = new BigDecimal(String.valueOf(extContract.getDesignFee()));
+ BigDecimal surveyFees = new BigDecimal(String.valueOf(extContract.getSurveyFees()));
+ BigDecimal testingFee = new BigDecimal(String.valueOf(extContract.getTestingFee()));
+ BigDecimal other = new BigDecimal(extContract.getOtherFee());
+ return preAmount.add(designFee).add(surveyFees).add(testingFee).add(other);
+ }
+
+}
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