diff --git a/app/task.py b/app/task.py
index 1d84504..6f90c60 100644
--- a/app/task.py
+++ b/app/task.py
@@ -73,12 +73,11 @@ def process_message_callback(
     sender_info = event_message.get("sender")
     message_data = event_message.get("message")
 
-    chat_id = message_data.get("chat_id")
-    thread_id = message_data.get("thread_id")
+    sender_id = sender_info.get("sender_id").get("open_id")
 
+    thread_id = message_data.get("thread_id")
     message_type = message_data.get("message_type")
     content = message_data.get("content")
-    sender_id = message_data.get("sender_id")
     message_id = message_data.get("message_id")
 
     if not message_data.get("mentions"):