diff --git a/routers/repo/modelarts.go b/routers/repo/modelarts.go
index 828590564..19b61cb44 100755
--- a/routers/repo/modelarts.go
+++ b/routers/repo/modelarts.go
@@ -346,9 +346,12 @@ func NotebookShow(ctx *context.Context) {
 }
 
 func GetModelDownload(task *models.Cloudbrain) models.ModelDownload {
+	index := strings.Index(task.PreTrainModelUrl, "/")
+	key := task.PreTrainModelUrl[index+1:] + task.CkptName
+	url, _ := storage.GetObsCreateSignedUrlByBucketAndKey(setting.Bucket, key)
 	modelDownload := models.ModelDownload{
 		Name:         task.CkptName,
-		DownloadLink: "s3://" + task.PreTrainModelUrl + task.CkptName,
+		DownloadLink: url,
 		IsDelete:     false,
 	}