diff --git a/themes/farallon/layouts/partials/head.html b/themes/farallon/layouts/partials/head.html
index eb3d539..abb9fba 100644
--- a/themes/farallon/layouts/partials/head.html
+++ b/themes/farallon/layouts/partials/head.html
@@ -16,6 +16,19 @@
 <meta name="twitter:description" content="{{ .Params.description}}">
 {{ end }}
 <link rel="stylesheet" href="{{ $styles.Permalink }}" integrity="{{ $styles.Data.Integrity }}" media="screen">
+<script src="//cdn.jkjoy.cn/highlight/prism.js"></script>
+<link rel="stylesheet" href="//cdn.jkjoy.cn/highlight/prism.css"  />
+  <script>
+  document.addEventListener('DOMContentLoaded', function () {
+    var defaultLanguage = 'javascript'; // 设置默认语言
+    document.querySelectorAll('pre code').forEach(function (block) {
+      if (!block.classList.length) {
+        block.classList.add('language-' + defaultLanguage);
+      }
+    });
+    Prism.highlightAll();
+  });
+</script>
 {{ $favicon := resources.Get "images/favicon.png" }}
 <link type="image/vnd.microsoft.icon" href="{{ $.Site.Params.icon }}" rel="shortcut icon">
 {{ if .OutputFormats.Get "RSS" }}