diff --git a/library/think/Request.php b/library/think/Request.php
index 10ac4b91..f502869a 100644
--- a/library/think/Request.php
+++ b/library/think/Request.php
@@ -21,6 +21,11 @@ class Request
      */
     protected static $instance;
 
+    /**
+     * @var string URL地址
+     */
+    protected $url;
+
     /**
      * @var string 基础URL
      */