diff --git a/api/app/controllers/app_controller.py b/api/app/controllers/app_controller.py
index 85493500..9b77fa30 100644
--- a/api/app/controllers/app_controller.py
+++ b/api/app/controllers/app_controller.py
@@ -193,6 +193,7 @@ def delete_app(
 @cur_workspace_access_guard()
 def copy_app(
         app_id: uuid.UUID,
+        new_name: Optional[str] = None,
         payload: app_schema.CopyAppRequest = None,
         db: Session = Depends(get_db),
         current_user=Depends(get_current_user),
@@ -205,7 +206,8 @@ def copy_app(
     - 不影响原应用
     """
     workspace_id = current_user.current_workspace_id
-    new_name = payload.new_name if payload else None
+    # body takes precedence over query param for backward compatibility
+    new_name = (payload.new_name if payload else None) or new_name
     logger.info(
         "用户请求复制应用",
         extra={