diff --git a/fastapi_app.py b/fastapi_app.py
index 2557065..f6ac710 100644
--- a/fastapi_app.py
+++ b/fastapi_app.py
@@ -1040,7 +1040,7 @@ def process_messages(messages: List[Message], language: Optional[str] = None) ->
         language_instruction = language_map.get(language.lower(), '')
         if language_instruction:
             # 在最后一条消息末尾追加语言指令
-            final_messages[-1]['content'] = final_messages[-1]['content'] + f"\n\n{language_instruction}。"
+            final_messages[-1]['content'] = final_messages[-1]['content'] + f"\n\nlanguage:\n{language_instruction}。"
 
     return final_messages