diff --git a/core/routers/chat/schema.py b/core/routers/chat/schema.py
index bd3c21c..9e72b10 100644
--- a/core/routers/chat/schema.py
+++ b/core/routers/chat/schema.py
@@ -27,6 +27,7 @@ class ChatCreateIn(BaseModel):
 
 
 class PreviewMessage(BaseModel):
+    id: int
     message_type: MessageType
     content: str
 
diff --git a/core/routers/chat/services.py b/core/routers/chat/services.py
index 472078b..17fcfa3 100644
--- a/core/routers/chat/services.py
+++ b/core/routers/chat/services.py
@@ -50,7 +50,7 @@ async def get_unread_messages_per_chat(
     # 查询消息情况
     read_status_alias = aliased(ReadStatus)
     query = (
-        select(Message.chat_id, Message.content, Message.message_type, func.count().label("message_count"))
+        select(Message.id, Message.chat_id, Message.content, Message.message_type, func.count().label("message_count"))
         .join(
             read_status_alias,
             and_(read_status_alias.user_id == login_user.user_id, read_status_alias.chat_id == Message.chat_id),
@@ -69,12 +69,13 @@ async def get_unread_messages_per_chat(
     unread_messages_info = result.fetchall()
 
     for messages_info in unread_messages_info:
-        unread_messages_info_per_chat[messages_info[0]] = {
+        unread_messages_info_per_chat[messages_info[1]] = {
             'message': {
-                'message_type': messages_info[2],
-                'content': messages_info[1],
+                'id': messages_info[0],
+                'message_type': messages_info[3],
+                'content': messages_info[2],
             },
-            'message_count': messages_info[3],
+            'message_count': messages_info[4],
         }
 
     results = []