diff --git a/pilot/openapi/api_v1/api_v1.py b/pilot/openapi/api_v1/api_v1.py
index b8d1dc3b7..1a72a4e04 100644
--- a/pilot/openapi/api_v1/api_v1.py
+++ b/pilot/openapi/api_v1/api_v1.py
@@ -216,7 +216,7 @@ async def params_load(conv_uid: str, chat_mode: str, doc_file: UploadFile = File
                 conv_uid=conv_uid, chat_mode=chat_mode, select_param=doc_file.filename
             )
             chat: BaseChat = get_chat_instance(dialogue)
-            resp = chat.prepare()
+            resp = await chat.prepare()
 
         ### refresh messages
         return Result.succ(get_hist_messages(conv_uid))
@@ -279,7 +279,7 @@ async def chat_prepare(dialogue: ConversationVo = Body()):
     chat: BaseChat = get_chat_instance(dialogue)
     if len(chat.history_message) > 0:
         return Result.succ(None)
-    resp = chat.prepare()
+    resp = await chat.prepare()
     return Result.succ(resp)
 
 
diff --git a/pilot/scene/base_chat.py b/pilot/scene/base_chat.py
index 88f457935..e2c9a03b0 100644
--- a/pilot/scene/base_chat.py
+++ b/pilot/scene/base_chat.py
@@ -244,7 +244,7 @@ class BaseChat(ABC):
         else:
             return self._blocking_nostream_call()
 
-    def prepare(self):
+    async def prepare(self):
         pass
 
     def generate_llm_text(self) -> str:
diff --git a/pilot/scene/chat_data/chat_excel/excel_analyze/chat.py b/pilot/scene/chat_data/chat_excel/excel_analyze/chat.py
index 806fada18..0bfb9f915 100644
--- a/pilot/scene/chat_data/chat_excel/excel_analyze/chat.py
+++ b/pilot/scene/chat_data/chat_excel/excel_analyze/chat.py
@@ -81,7 +81,7 @@ class ChatExcel(BaseChat):
         }
         return input_values
 
-    def prepare(self):
+    async def prepare(self):
         logger.info(f"{self.chat_mode} prepare start!")
         if len(self.history_message) > 0:
             return None
@@ -93,7 +93,7 @@ class ChatExcel(BaseChat):
             "excel_reader": self.excel_reader,
         }
         learn_chat = ExcelLearning(**chat_param)
-        result = learn_chat.nostream_call()
+        result = await learn_chat.nostream_call()
         return result
 
     def do_action(self, prompt_response):
diff --git a/pilot/utils/utils.py b/pilot/utils/utils.py
index ca7cf9d3c..5b4ed064a 100644
--- a/pilot/utils/utils.py
+++ b/pilot/utils/utils.py
@@ -135,12 +135,13 @@ def pretty_print_semaphore(semaphore):
 
 
 def get_or_create_event_loop() -> asyncio.BaseEventLoop:
+    loop = None
     try:
         loop = asyncio.get_event_loop()
-    except Exception as e:
+        assert loop is not None
+        return loop
+    except RuntimeError as e:
         if not "no running event loop" in str(e):
             raise e
         logging.warning("Cant not get running event loop, create new event loop now")
-        loop = asyncio.new_event_loop()
-        asyncio.set_event_loop(loop)
-    return loop
+        return asyncio.get_event_loop_policy().get_event_loop()