diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/chat/AiChatMessageController.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/chat/AiChatMessageController.java
index 47f35f4ea..ad9375f39 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/chat/AiChatMessageController.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/chat/AiChatMessageController.java
@@ -55,4 +55,10 @@ public class AiChatMessageController {
         return success(chatService.deleteMessage(id));
     }
 
+    @Operation(summary = "删除消息-对于对话全部消息")
+    @DeleteMapping("/delete-by-conversation-id")
+    @Parameter(name = "id", required = true, description = "消息编号", example = "1024")
+    public CommonResult<Boolean> deleteByConversationId(@RequestParam("conversationId") Long conversationId) {
+        return success(chatService.deleteByConversationId(conversationId));
+    }
 }
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/dal/mysql/AiChatMessageMapper.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/dal/mysql/AiChatMessageMapper.java
index fef19af12..6c9c22ad0 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/dal/mysql/AiChatMessageMapper.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/dal/mysql/AiChatMessageMapper.java
@@ -32,4 +32,12 @@ public interface AiChatMessageMapper extends BaseMapperX<AiChatMessageDO> {
         );
     }
 
+    /**
+     * 删除 - 根据 conversationId
+     *
+     * @param conversationId
+     */
+    default int deleteByConversationId(Long conversationId) {
+        return this.delete(new LambdaQueryWrapperX<AiChatMessageDO>().eq(AiChatMessageDO::getConversationId, conversationId));
+    }
 }
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/AiChatService.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/AiChatService.java
index 57d848eea..f8924cb63 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/AiChatService.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/AiChatService.java
@@ -47,4 +47,11 @@ public interface AiChatService {
      */
     Flux<AiChatMessageSendRespVO> sendChatMessageStream(AiChatMessageSendReqVO sendReqVO, Long userId);
 
+    /**
+     * 删除消息-对于对话全部消息
+     *
+     * @param conversationId
+     * @return
+     */
+    Boolean deleteByConversationId(Long conversationId);
 }
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/impl/AiChatServiceImpl.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/impl/AiChatServiceImpl.java
index 7c7e37954..0a52681c6 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/impl/AiChatServiceImpl.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/impl/AiChatServiceImpl.java
@@ -1,34 +1,29 @@
 package cn.iocoder.yudao.module.ai.service.impl;
 
 import cn.hutool.core.collection.CollUtil;
-import cn.hutool.core.collection.ListUtil;
-import cn.hutool.core.util.ArrayUtil;
-import cn.hutool.core.util.BooleanUtil;
 import cn.hutool.core.util.ObjUtil;
 import cn.hutool.core.util.StrUtil;
 import cn.iocoder.yudao.framework.ai.core.enums.AiPlatformEnum;
 import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
-import cn.iocoder.yudao.module.ai.controller.admin.chat.vo.message.AiChatMessageSendRespVO;
-import cn.iocoder.yudao.module.ai.dal.dataobject.chat.AiChatConversationDO;
-import org.springframework.ai.chat.ChatResponse;
-import org.springframework.ai.chat.StreamingChatClient;
-import org.springframework.ai.chat.messages.*;
-import org.springframework.ai.chat.prompt.ChatOptions;
-import org.springframework.ai.chat.prompt.ChatOptionsBuilder;
-import org.springframework.ai.chat.prompt.Prompt;
 import cn.iocoder.yudao.module.ai.config.AiChatClientFactory;
 import cn.iocoder.yudao.module.ai.controller.admin.chat.vo.message.AiChatMessageRespVO;
 import cn.iocoder.yudao.module.ai.controller.admin.chat.vo.message.AiChatMessageSendReqVO;
+import cn.iocoder.yudao.module.ai.controller.admin.chat.vo.message.AiChatMessageSendRespVO;
 import cn.iocoder.yudao.module.ai.convert.AiChatMessageConvert;
+import cn.iocoder.yudao.module.ai.dal.dataobject.chat.AiChatConversationDO;
 import cn.iocoder.yudao.module.ai.dal.dataobject.chat.AiChatMessageDO;
 import cn.iocoder.yudao.module.ai.dal.dataobject.model.AiChatModelDO;
 import cn.iocoder.yudao.module.ai.dal.mysql.AiChatMessageMapper;
-import cn.iocoder.yudao.module.ai.service.chat.AiChatConversationService;
-import cn.iocoder.yudao.module.ai.service.model.AiChatRoleService;
 import cn.iocoder.yudao.module.ai.service.AiChatService;
+import cn.iocoder.yudao.module.ai.service.chat.AiChatConversationService;
 import cn.iocoder.yudao.module.ai.service.model.AiChatModelService;
+import cn.iocoder.yudao.module.ai.service.model.AiChatRoleService;
 import lombok.AllArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.ai.chat.ChatResponse;
+import org.springframework.ai.chat.StreamingChatClient;
+import org.springframework.ai.chat.messages.*;
+import org.springframework.ai.chat.prompt.Prompt;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import reactor.core.publisher.Flux;
@@ -143,6 +138,11 @@ public class AiChatServiceImpl implements AiChatService {
         });
     }
 
+    @Override
+    public Boolean deleteByConversationId(Long conversationId) {
+        return chatMessageMapper.deleteByConversationId(conversationId) > 0;
+    }
+
     private Prompt buildPrompt(AiChatConversationDO conversation, List<AiChatMessageDO> messages, AiChatMessageSendReqVO sendReqVO) {
         // 1. 构建 Prompt Message 列表
         List<Message> chatMessages = new ArrayList<>();