diff --git a/modules/storage/obs.go b/modules/storage/obs.go
index 8e6b4201b..f733eef6c 100755
--- a/modules/storage/obs.go
+++ b/modules/storage/obs.go
@@ -480,7 +480,7 @@ func GetObsCreateSignedUrlByBucketAndKey(bucket, key string) (string, error) {
 		filename = key[comma+1:]
 	}
 	reqParams := make(map[string]string)
-	filename = url.QueryEscape(filename)
+	filename = url.PathEscape(filename)
 	reqParams["response-content-disposition"] = "attachment; filename=\"" + filename + "\""
 	input.QueryParams = reqParams
 	output, err := ObsCli.CreateSignedUrl(input)
@@ -503,6 +503,7 @@ func ObsGetPreSignedUrl(uuid, fileName string) (string, error) {
 	input.Bucket = setting.Bucket
 	input.Expires = 60 * 60
 
+	fileName = url.PathEscape(fileName)
 	reqParams := make(map[string]string)
 	reqParams["response-content-disposition"] = "attachment; filename=\"" + fileName + "\""
 	input.QueryParams = reqParams