diff --git a/tools-v2/README.md b/tools-v2/README.md
index 19a375ef58..da78459a58 100644
--- a/tools-v2/README.md
+++ b/tools-v2/README.md
@@ -1675,7 +1675,7 @@ delete the snapshot in curvebs
 Usage:
 
 ```shell
-curve bs delete snapshot
+curve bs delete snapshot --path /test111/test222 --user root --snapshotFailed=false
 ```
 
 Output: