diff --git a/main/xiaozhi-server/core/connection.py b/main/xiaozhi-server/core/connection.py
index f9ab946d..c838a1e0 100644
--- a/main/xiaozhi-server/core/connection.py
+++ b/main/xiaozhi-server/core/connection.py
@@ -859,7 +859,7 @@ class ConnectionHandler:
                             {
                                 "id": function_id,
                                 "function": {
-                                    "arguments": function_arguments,
+                                    "arguments": '{}' if function_arguments == '' else function_arguments,
                                     "name": function_name,
                                 },
                                 "type": "function",