diff --git a/WeChat/Contracts/BasicWeChat.php b/WeChat/Contracts/BasicWeChat.php
index 1af8ceb..83c9a3d 100644
--- a/WeChat/Contracts/BasicWeChat.php
+++ b/WeChat/Contracts/BasicWeChat.php
@@ -105,7 +105,7 @@ class BasicWeChat
         if (!empty($result['access_token'])) {
             Tools::setCache($cache, $result['access_token'], 7000);
         }
-        return $result['access_token'];
+        return $this->access_token = $result['access_token'];
     }
 
     /**