diff --git a/app/common/dao/store/StoreActivityUserDao.php b/app/common/dao/store/StoreActivityUserDao.php
index d7f3c21d..ba2926d0 100644
--- a/app/common/dao/store/StoreActivityUserDao.php
+++ b/app/common/dao/store/StoreActivityUserDao.php
@@ -118,7 +118,7 @@ class StoreActivityUserDao extends BaseDao
             ->where('is_first_order', StoreActivityOrder::IS_FIRST_ORDER)
             ->where('total_amount', '>=', $scope['start'])
             ->where('status', StoreActivityOrder::STATUS_VALID)
-            ->select();
+            ->select()->toArray();
         $orders = reset_index($orders, 'user_id');
         foreach ($userInfo as &$user) {
             $user['target_amount'] = $scope['start'];