diff --git a/Application/Home/Controller/DownloadController.class.php b/Application/Home/Controller/DownloadController.class.php
index 1f632a097..64a0138bb 100644
--- a/Application/Home/Controller/DownloadController.class.php
+++ b/Application/Home/Controller/DownloadController.class.php
@@ -1913,6 +1913,9 @@ class DownloadController extends BaseController {
                     $gameId = $v['game_id'];
                     $serverInfo = M('server','tab_')->field('server_name')->where(['server_num'=>$serverId,'game_id'=>$gameId])->find();
                     $v['promote_id']= $promoteInfo['account']; 
+                    if(empty($v['extend'])) {
+                        $v['extend'] = $v['order_id'];
+                    }
                     $csvData['extend'] = $this->encryption($v['extend']);
                     $csvData['create_time'] = $v['create_time'];
                     $csvData['user_account'] = $v['user_account'];