diff --git a/WeChat/Contracts/BasicAliPay.php b/WeChat/Contracts/BasicAliPay.php
index 77fe358..9a94c62 100644
--- a/WeChat/Contracts/BasicAliPay.php
+++ b/WeChat/Contracts/BasicAliPay.php
@@ -149,7 +149,7 @@ abstract class BasicAliPay
     }
 
     /**
-     * 验证支付宝支付宝通知
+     * 验证接口返回的数据签名
      * @param array $data 通知数据
      * @param null|string $sign 数据签名
      * @return array|boolean