diff --git a/modules/storage/obs.go b/modules/storage/obs.go
index 123ff4094..e7de0c77d 100755
--- a/modules/storage/obs.go
+++ b/modules/storage/obs.go
@@ -255,7 +255,7 @@ func GetAllObsListObjectUnderDir(bucket string, prefix string) ([]FileInfo, erro
 			}
 			fileInfo := FileInfo{
 				ModTime:  val.LastModified.Format("2006-01-02 15:04:05"),
-				FileName: val.Key[len(prefix):],
+				FileName: val.Key[len(prefix)+1:],
 				Size:     val.Size,
 				IsDir:    isDir,
 				ParenDir: "",