diff --git a/app/logic/Upload.php b/app/logic/Upload.php
index c85f840..89032be 100644
--- a/app/logic/Upload.php
+++ b/app/logic/Upload.php
@@ -50,9 +50,10 @@ class Upload
         $storage = config('filesystem.disks.public.url');
         // 获取绝对路径
         $absolutePath = $rootPath . 'public/' . "{$storage}/" . $path;
+        $extension = pathinfo($absolutePath, PATHINFO_EXTENSION);
 
         $image = Image::make($absolutePath);
-        $image->encode('jpg',10)->save($absolutePath);
+        $image->encode($extension,10)->save($absolutePath);
 
         return $path;
     }