diff --git a/routers/repo/attachment_model.go b/routers/repo/attachment_model.go
index bfd298744..efc7cbe08 100644
--- a/routers/repo/attachment_model.go
+++ b/routers/repo/attachment_model.go
@@ -227,7 +227,6 @@ func GetModelMultipartUploadUrl(ctx *context.Context) {
 	uploadID := ctx.Query("uploadID")
 	partNumber := ctx.QueryInt("chunkNumber")
 	size := ctx.QueryInt64("size")
-	fileName := ctx.Query("file_name")
 	typeCloudBrain := ctx.QueryInt("type")
 	err := checkTypeCloudBrain(typeCloudBrain)
 	if err != nil {
@@ -249,24 +248,19 @@ func GetModelMultipartUploadUrl(ctx *context.Context) {
 			ctx.Error(400, fmt.Sprintf("chunk size(%d) is too big", size))
 			return
 		}
-
 		url, err = storage.GenMultiPartSignedUrl(fileChunk.ObjectName, uploadID, partNumber, size)
 		if err != nil {
 			ctx.Error(500, fmt.Sprintf("GenMultiPartSignedUrl failed: %v", err))
 			return
 		}
 	} else {
-		if setting.PROXYURL != "" {
-			url = setting.PROXYURL + "/obs_proxy_multipart?uuid=" + uuid + "&uploadId=" + uploadID + "&partNumber=" + fmt.Sprint(partNumber) + "&file_name=" + fileName
-			log.Info("return url=" + url)
-		} else {
-			url, err = storage.ObsGenMultiPartSignedUrl(fileChunk.ObjectName, uploadID, partNumber)
-			if err != nil {
-				ctx.Error(500, fmt.Sprintf("ObsGenMultiPartSignedUrl failed: %v", err))
-				return
-			}
-			log.Info("url=" + url)
+		url, err = storage.ObsGenMultiPartSignedUrl(fileChunk.ObjectName, uploadID, partNumber)
+		if err != nil {
+			ctx.Error(500, fmt.Sprintf("ObsGenMultiPartSignedUrl failed: %v", err))
+			return
 		}
+		log.Info("url=" + url)
+
 	}
 
 	ctx.JSON(200, map[string]string{