diff --git a/apps/api/app/api/routes/tts.py b/apps/api/app/api/routes/tts.py
index 1069d4e77..f1e06dc0f 100755
--- a/apps/api/app/api/routes/tts.py
+++ b/apps/api/app/api/routes/tts.py
@@ -360,7 +360,7 @@ def _find_or_create_voice_library(
         raise HTTPException(
             status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
             detail="配音素材库创建失败，请重试",
-        )
+        ) from None  # IntegrityError 已处理，不保留异常链
 
 
 @router.post(