diff --git a/video-gen-api/app/api/v1/admin.py b/video-gen-api/app/api/v1/admin.py
index 12961243..eee15906 100644
--- a/video-gen-api/app/api/v1/admin.py
+++ b/video-gen-api/app/api/v1/admin.py
@@ -1081,8 +1081,8 @@ async def update_system_config(
     config = result.scalar_one_or_none()
     if not config:
         raise HTTPException(status_code=404, detail="配置不存在")
-    config.value = req.value
-    await db.flush()
+    config.value = str(req.value)
+    await db.commit()
     return config