diff --git a/layout/_partial/head.ejs b/layout/_partial/head.ejs
index aee730a..64852d2 100755
--- a/layout/_partial/head.ejs
+++ b/layout/_partial/head.ejs
@@ -63,6 +63,19 @@
       document.getElementById('loading-bar').style.width=num+"%";
     }
   </script>
+
+  <!-- ga -->
+  <% if (config.google_analytics) { %>
+    <script>
+      (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+      (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+      m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+      })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+      ga('create', '<%- config.google_analytics %>', '<%- config.root_domain %>');
+      ga('send', 'pageview');
+    </script>
+  <% } %>
+  <!-- ba -->
   <% if (config.baidu_analytics_key) { %>
     <script>
     var _hmt = _hmt || [];