diff --git a/server.py b/server.py
index 96a021a..1308bde 100644
--- a/server.py
+++ b/server.py
@@ -240,7 +240,11 @@ def start_sio_listener():
     @app.ctx.sio.on('addMessage')
     async def add_message(data: Dict[str, Any]):
         sio_decorator = cmds.cmds(app, data)
-        await sio_decorator.route2cmd_and_run()
+        try:
+            await sio_decorator.route2cmd_and_run()
+        except IndexError:
+            # 处理非文本消息
+            pass
 
 
 if __name__ == "__main__":
diff --git a/sio_model.py b/sio_model.py
index 2c15cc1..db3a909 100644
--- a/sio_model.py
+++ b/sio_model.py
@@ -110,8 +110,6 @@ class SioDecorator:
             self.cmds[f'/{cmd}'] = func
 
     async def route2cmd_and_run(self):
-        if self._cmd == '':
-            return None
         func = self.cmds.get(self._cmd[0])
         if func:
             sender_id = self.data['message']['senderId']