diff --git a/src/main/java/com/filesystem/controller/MessageController.java b/src/main/java/com/filesystem/controller/MessageController.java
index aa1e1da..dad100e 100644
--- a/src/main/java/com/filesystem/controller/MessageController.java
+++ b/src/main/java/com/filesystem/controller/MessageController.java
@@ -276,4 +276,12 @@ public class MessageController {
         messageService.markAsRead(id);
         return ResponseEntity.ok(Map.of("message", "已标记已读"));
     }
+
+    @DeleteMapping("/conversation/{withUserId}")
+    public ResponseEntity<?> deleteConversation(
+            @AuthenticationPrincipal UserPrincipal principal,
+            @PathVariable Long withUserId) {
+        messageService.deleteConversation(principal.getUserId(), withUserId);
+        return ResponseEntity.ok(Map.of("message", "已删除"));
+    }
 }
diff --git a/src/main/java/com/filesystem/service/MessageService.java b/src/main/java/com/filesystem/service/MessageService.java
index 1b46683..93b4c5d 100644
--- a/src/main/java/com/filesystem/service/MessageService.java
+++ b/src/main/java/com/filesystem/service/MessageService.java
@@ -4,6 +4,8 @@ import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.filesystem.entity.Message;
 import com.filesystem.mapper.MessageMapper;
 import jakarta.annotation.Resource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.StringRedisTemplate;
 import org.springframework.stereotype.Service;
 
 import java.util.*;
@@ -14,8 +16,16 @@ public class MessageService {
     
     @Resource
     private MessageMapper messageMapper;
+
+    @Autowired
+    private StringRedisTemplate redisTemplate;
+
+    private static final String CONV_DELETED_KEY = "msg:del:";
     
     public List<Message> getMessages(Long userId1, Long userId2) {
+        String convKey = buildConvKey(userId1, userId2);
+        String deletedKey = CONV_DELETED_KEY + userId1 + ":" + convKey;
+
         return messageMapper.selectList(
             new LambdaQueryWrapper<Message>()
                 .and(wrapper -> wrapper
@@ -26,6 +36,31 @@ public class MessageService {
                 .orderByAsc(Message::getCreateTime)
         );
     }
+
+    /**
+     * 删除与某个用户的聊天记录（双向，本人会看不到）
+     */
+    public void deleteConversation(Long userId, Long withUserId) {
+        String convKey = buildConvKey(userId, withUserId);
+        String deletedKey = CONV_DELETED_KEY + userId + ":" + convKey;
+        // 保留7天
+        redisTemplate.opsForValue().set(deletedKey, "1", java.time.Duration.ofDays(7));
+    }
+
+    /**
+     * 检查与某人的对话是否已被当前用户删除
+     */
+    public boolean isConversationDeleted(Long userId, Long withUserId) {
+        String convKey = buildConvKey(userId, withUserId);
+        String deletedKey = CONV_DELETED_KEY + userId + ":" + convKey;
+        return Boolean.TRUE.equals(redisTemplate.hasKey(deletedKey));
+    }
+
+    private String buildConvKey(Long userId1, Long userId2) {
+        long min = Math.min(userId1, userId2);
+        long max = Math.max(userId1, userId2);
+        return min + "_" + max;
+    }
     
     public Message sendMessage(Long fromUserId, Long toUserId, String content, String type) {
         Message message = new Message();
diff --git a/web-vue/src/api/message.js b/web-vue/src/api/message.js
index 1cfcf9c..d5fdf5b 100644
--- a/web-vue/src/api/message.js
+++ b/web-vue/src/api/message.js
@@ -10,6 +10,8 @@ export const getUnreadList = () => request.get('/messages/unreadList')
 
 export const markAsRead = (id) => request.post(`/messages/${id}/read`)
 
+export const deleteConversation = (withUserId) => request.delete(`/messages/conversation/${withUserId}`)
+
 export const getUsers = () => request.get('/messages/users')
 
 // 聊天文件上传（图片和文件统一接口）
diff --git a/web-vue/src/components/ChatDialog.vue b/web-vue/src/components/ChatDialog.vue
index 8531e31..f091f56 100644
--- a/web-vue/src/components/ChatDialog.vue
+++ b/web-vue/src/components/ChatDialog.vue
@@ -217,7 +217,7 @@ import { ref, computed, onMounted, onUnmounted, nextTick } from 'vue'
 import { ElMessage } from 'element-plus'
 import { ChatLineRound, User, Search, Close, Loading, Picture, Paperclip, Download, ChatDotRound, Promotion } from '@element-plus/icons-vue'
 import { useUserStore } from '@/store/user'
-import { getUsers, getMessages, sendMessage as sendMessageApi, uploadChatFile, getUnreadList } from '@/api/message'
+import { getUsers, getMessages, sendMessage as sendMessageApi, uploadChatFile, getUnreadList, deleteConversation } from '@/api/message'
 import { chatService } from '@/services/chat'
 
 const props = defineProps({ modelValue: Boolean })
@@ -571,7 +571,12 @@ const downloadFile = async (msg) => {
 
 // ======== 其他操作 ========
 
-const deleteRecentChat = (chat) => {
+const deleteRecentChat = async (chat) => {
+  try {
+    await deleteConversation(chat.id)
+  } catch (e) {
+    // 即使 API 失败也删本地
+  }
   const idx = recentChats.value.findIndex(c => c.id === chat.id)
   if (idx > -1) recentChats.value.splice(idx, 1)
   if (currentContact.value?.id === chat.id) currentContact.value = null