diff --git a/app/Service/AttachmentService.php b/app/Service/AttachmentService.php
index a788e6c..c576be9 100644
--- a/app/Service/AttachmentService.php
+++ b/app/Service/AttachmentService.php
@@ -74,12 +74,12 @@ class AttachmentService implements AttachmentServiceInterface
     public function switchImgToAliOss($path, $bucket = 'thumbnail_q50')
     {
         if (strpos($path, 'http') === false || strpos($path, 'https') === false) {
-            $path = 'https://img.lanzulive.com/' . $path;
+            $path = env('IMG_HOST') . $path;
         } else {
             $temp = explode('//', $path);
             $temp = explode('/', $temp[1]);
             unset($temp[0]);
-            $path = 'https://img.lanzulive.com/' . implode('/', $temp);
+            $path = env('IMG_HOST') . implode('/', $temp);
         }
         return $path . '!' . $bucket;
     }