diff --git a/extend/Ca/CaOffline.php b/extend/Ca/CaOffline.php
index ffcc56c..7003da6 100644
--- a/extend/Ca/CaOffline.php
+++ b/extend/Ca/CaOffline.php
@@ -20,7 +20,7 @@ class CaOffline extends Base
             throw new BusinessException("缺少ca线下配置");
         }
         $this->app_id = $offline['app_id'];
-        $this->api_url = $offline['app_id'];
+        $this->api_url = $offline['api_url'];
         $this->secret = $offline['secret'];
     }