diff --git a/internal/accessor/oss/oss.go b/internal/accessor/oss/oss.go
index b005c05..6cde238 100644
--- a/internal/accessor/oss/oss.go
+++ b/internal/accessor/oss/oss.go
@@ -66,7 +66,7 @@ func (r *OssRepositoryImpl) GetPublicURL(fileName string) string {
 	if fileName == "" {
 		return ""
 	}
-	return fmt.Sprintf("%s:%s%s", r.cfg.GetPublicURL(), r.cfg.GetBucketName(), fileName)
+	return fmt.Sprintf("%s/%s%s", r.cfg.GetPublicURL(), r.cfg.GetBucketName(), fileName)
 }
 
 func (r *OssRepositoryImpl) DeleteObject(ctx context.Context, fileName string) error {