diff --git a/src/CosAdapter.php b/src/CosAdapter.php
index e0c46ab..156e3d1 100644
--- a/src/CosAdapter.php
+++ b/src/CosAdapter.php
@@ -19,6 +19,7 @@
 use Overtrue\CosClient\BucketClient;
 use Overtrue\CosClient\Exceptions\ClientException;
 use Overtrue\CosClient\ObjectClient;
+use TheNorthMemory\Xml\Transformer;
 
 class CosAdapter implements FilesystemAdapter
 {
@@ -155,10 +156,8 @@ function ($item) {
 
         $response = $this->getObjectClient()->deleteObjects(
             [
-                'Delete' => [
-                    'Quiet' => 'false',
-                    'Object' => $keys,
-                ],
+                'Quiet' => 'false',
+                'Object' => Transformer::wrap($keys, true, 'Object'),
             ]
         );