diff --git a/backend/app/services/task_service.py b/backend/app/services/task_service.py
index 2cbb158..ccfec42 100644
--- a/backend/app/services/task_service.py
+++ b/backend/app/services/task_service.py
@@ -599,7 +599,7 @@ async def transfer_task(
         await db.refresh(nt)
         created_task_responses.append(_to_response(nt))
 
-    assignee_list = ", ".join(real_assignees)
+    assignee_list = ", ".join(a for _, a in real_branches) if real_branches else "仓库"
     location_info = ""
     if has_warehouse:
         location_info = "，产品已入库(virtual_warehouse)"