diff --git a/_config.yml b/_config.yml
index 5044d30..34cb7f9 100644
--- a/_config.yml
+++ b/_config.yml
@@ -98,7 +98,7 @@ google_analytics: ''
 baidu_analytics: ''
 
 # 数学公式
-mathjax: true
+mathjax: false
 
 # 网站成立年份(默认为 2019，若填入年份小于当前年份，则显示为 2018-2019 类似的格式)
 since: 2015
diff --git a/layout/_partial/after-footer.ejs b/layout/_partial/after-footer.ejs
index bbcc119..eb1b3e1 100644
--- a/layout/_partial/after-footer.ejs
+++ b/layout/_partial/after-footer.ejs
@@ -37,3 +37,7 @@
 <% if (theme.mathjax){ %>
   <%- partial('mathjax') %>
 <% } %>
+
+<script type="text/javascript" src="https://js.users.51.la/20544303.js"></script>
+  
+  
\ No newline at end of file