diff --git a/book.toml b/book.toml
index 12a6c30..2e188ca 100644
--- a/book.toml
+++ b/book.toml
@@ -17,7 +17,6 @@ additional-css = ["theme/pagetoc.css"]
 additional-js  = ["theme/pagetoc.js"]
 git-repository-url = "https://github.com/gnu4cn/ts-learnings"
 git-repository-icon = "fa-github"
-google-analytics="G-VP1TNZE5KK"
 
 [output.html.print]
 enable = false
diff --git a/theme/index.hbs b/theme/index.hbs
index 7f4abef..a1c85bb 100644
--- a/theme/index.hbs
+++ b/theme/index.hbs
@@ -242,25 +242,6 @@
       </script>
       {{/if}}
 
-      {{#if google_analytics}}
-      <!-- Google Analytics Tag -->
-      <script>
-        var localAddrs = ["localhost", "127.0.0.1", ""];
-
-        // make sure we don't activate google analytics if the developer is
-        // inspecting the book locally...
-        if (localAddrs.indexOf(document.location.hostname) === -1) {
-                  (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','https://www.google-analytics.com/analytics.js','ga');
-
-                  ga('create', '{{google_analytics}}', 'auto');
-                  ga('send', 'pageview');
-                }
-      </script>
-      {{/if}}
-
       {{#if playground_line_numbers}}
       <script>
         window.playground_line_numbers = true;
@@ -316,4 +297,9 @@
 
     </div>
   </body>
+
+<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-7565332882098911"
+     crossorigin="anonymous"></script>
+<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-7565332882098911"
+     crossorigin="anonymous"></script>
 </html>