diff --git a/CHANGELOG b/CHANGELOG
index 196032b1..e019746d 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,8 @@
+0.4.6
+--------------------------------------------------------
+- BUG修复模块
+  * base/util 模块的 _$url2origin 接口支持相对协议
+
 0.4.5   (2017-09-14)
 --------------------------------------------------------
 - 功能支持
diff --git a/src/base/util.js b/src/base/util.js
index 7f995dfa..237f22a7 100644
--- a/src/base/util.js
+++ b/src/base/util.js
@@ -766,7 +766,13 @@ NEJ.define([
     _p._$url2origin = (function(){
         var _reg = /^([\w]+?:\/\/.*?(?=\/|$))/i;
         return function(_url){
-            if (_reg.test(_url||''))
+            _url = _url||'';
+            // fix relative protocol
+            if (_url.indexOf('//')===0){
+                _url = location.protocol+_url;
+            }
+            // dump origin
+            if (_reg.test(_url))
                 return RegExp.$1.toLowerCase();
             return '';
         };