diff --git a/backend/storage.js b/backend/storage.js
index 9091d98..6214736 100644
--- a/backend/storage.js
+++ b/backend/storage.js
@@ -1216,17 +1216,15 @@ class OssStorageClient {
 
         return { size: totalDeletedSize };
       } else {
-        // 删除单个文件
+        // 删除单个文件（使用DeleteObjectCommand）
         // 获取文件大小
         const size = statResult.size || 0;
         totalDeletedSize = size;
 
-        const command = new DeleteObjectsCommand({
+        const { DeleteObjectCommand } = require('@aws-sdk/client-s3');
+        const command = new DeleteObjectCommand({
           Bucket: bucket,
-          Delete: {
-            Objects: [{ Key: key }],
-            Quiet: false
-          }
+          Key: key
         });
 
         await this.s3Client.send(command);