diff --git a/app/controller/add_langgraph_chat_route.py b/app/controller/add_langgraph_chat_route.py
index 7c5b356..2643561 100644
--- a/app/controller/add_langgraph_chat_route.py
+++ b/app/controller/add_langgraph_chat_route.py
@@ -159,7 +159,7 @@ def add_langgraph_chat_route(app: FastAPI):
     print("stream_config", stream_config)
 
     # 暂时每次对话的时候清理掉对话历史
-    await checkpointer.adelete_thread(stream_config.get('configurable').get('thread_id'))
+    # await checkpointer.adelete_thread(stream_config.get('configurable').get('thread_id'))
 
     async def generator_function():