diff --git a/数据统计查询服务.md b/数据统计查询服务.md
index 79bc633..049576e 100644
--- a/数据统计查询服务.md
+++ b/数据统计查询服务.md
@@ -47,7 +47,19 @@ $stats = new Stats($appId, $secret);
 example:
 
 ```php
-$stats->userSummary('2014-12-07', '2014-12-08');
+$userSummary = $stats->userSummary('2014-12-07', '2014-12-08');
+
+var_dump($userSummary);
+//
+//[
+//    {
+//        "ref_date": "2014-12-07",
+//        "user_source": 0,
+//        "new_user": 0,
+//        "cancel_user": 0
+//    }
+//    //后续还有ref_date在begin_date和end_date之间的数据
+// ]
 
 ```