diff --git a/CrossDown/Core.py b/CrossDown/Core.py
index 63810dc..920714f 100644
--- a/CrossDown/Core.py
+++ b/CrossDown/Core.py
@@ -1,4 +1,6 @@
-from markdown.extensions import Extension, extra, admonition, meta, sane_lists, toc, wikilinks
+from markdown.extensions import Extension, extra, admonition, meta, sane_lists, toc, wikilinks, codehilite
+
+from pygments.formatters import HtmlFormatter
 
 from markdown.treeprocessors import Treeprocessor
 from markdown.inlinepatterns import Pattern as Pattern_
@@ -11,15 +13,6 @@ import re
 import xml
 import emoji
 
-Extensions = {
-    "Extra": extra.ExtraExtension(fenced_code={'lang_prefix': ''}),  # 基本扩展
-    "Admonition": admonition.AdmonitionExtension(),  # 警告扩展
-    "Meta-Data": meta.MetaExtension(),  # 元数据
-    "Sane Lists": sane_lists.SaneListExtension(),  # 只能列表
-    "Table of Contents": toc.TocExtension(),  # 目录
-    "WikiLinks": wikilinks.WikiLinkExtension(),  # 内部链接
-}
-
 
 try:  # 检测当前平台是否支持扩展语法
     from .Extra import *
@@ -28,6 +21,30 @@ except ModuleNotFoundError:  # 不支持扩展语法
     EXTRA_ABLE = False
 
 
+class HighlightHtmlFormatter(HtmlFormatter):
+    def __init__(self, lang_str='', **options):
+        super().__init__(**options)
+        # lang_str has the value {lang_prefix}{lang}
+        # specified by the CodeHilite's options
+        self.lang_str = lang_str.split('-')[-1]
+
+    def _wrap_code(self, source):
+        yield 0, f'<code class="{self.lang_str}">'
+        yield from source
+        yield 0, '</code>'
+
+
+Extensions = {
+    '基本扩展': extra.ExtraExtension(fenced_code={'lang_prefix': ''}),
+    '警告扩展': admonition.AdmonitionExtension(),
+    '元数据': meta.MetaExtension(),
+    '能列表': sane_lists.SaneListExtension(),
+    '目录': toc.TocExtension(),
+    '内部链接': wikilinks.WikiLinkExtension(),
+    '代码高亮': codehilite.CodeHiliteExtension(guess_lang=False, pygments_formatter=HighlightHtmlFormatter),
+}
+
+
 class Simple(InlineProcessor):
     """
     可通过简单的正则表达式和HTML标签实现的样式
diff --git a/CrossDown/__init__.py b/CrossDown/__init__.py
index 4af49aa..b108b75 100644
--- a/CrossDown/__init__.py
+++ b/CrossDown/__init__.py
@@ -28,9 +28,11 @@ HEAD = (
     '</script>',
 
     # Highlight.js
-    '<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.3.1/styles/default.min.css">',
-    '<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.3.1/highlight.min.js"></script>',
-    '<script>hljs.highlightAll();</script>',
+    # '<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.3.1/styles/default.min.css">',
+    # '<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.3.1/highlight.min.js"></script>',
+    # '<script>hljs.highlightAll();</script>',
+
+    '<link rel="stylesheet" href="../Static/styles.css">',
 
     '<style>',
     '   .block {',
diff --git a/README.html b/README.html
index 59bde45..97eb51c 100644
--- a/README.html
+++ b/README.html
@@ -12,9 +12,7 @@
     <script>
        mermaid.initialize({startOnLoad:true});
     </script>
-    <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.3.1/styles/default.min.css">
-    <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.3.1/highlight.min.js"></script>
-    <script>hljs.highlightAll();</script>
+    <link rel="stylesheet" href="../Static/styles.css">
     <style>
        .block {
        background-color: grey; /* 灰色背景 */
@@ -187,25 +185,28 @@
     <p><span class="block">强调值</span></p>
     <h2 id="4.2">4.2 多行</h2>
     <h3 id="4.2.1">4.2.1 YAML</h3>
-    <pre><code class="yaml">A:
-        1. a
-        2. b
-        3. c
-    B:
-        - a
-        - b
-        - c
-    </code></pre>
+    <div class="codehilite"><pre><span></span><code class="yaml"><span class="nt">A</span><span class="p">:</span>
+    <span class="w">    </span><span class="l l-Scalar l-Scalar-Plain">1. a</span>
+    <span class="w">    </span><span class="l l-Scalar l-Scalar-Plain">2. b</span>
+    <span class="w">    </span><span class="l l-Scalar l-Scalar-Plain">3. c</span>
+    <span class="nt">B</span><span class="p">:</span>
+    <span class="w">    </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">a</span>
+    <span class="w">    </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">b</span>
+    <span class="w">    </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">c</span>
+    </code></pre></div>
+    
     <h3 id="4.2.2">4.2.2 Python</h3>
-    <pre><code class="python">print('CrossDown')
-    </code></pre>
+    <div class="codehilite"><pre><span></span><code class="python"><span class="nb">print</span><span class="p">(</span><span class="s1">&#39;CrossDown&#39;</span><span class="p">)</span>
+    </code></pre></div>
+    
     <h3 id="4.2.3">4.2.3 Mermaid</h3>
-    <pre><code class="mermaid">graph TD  
+    <div class="codehilite"><pre><span></span><code class="mermaid">graph TD  
         A[开始]--&gt;B[流程]  
         B--&gt;C{判断}  
         C--&gt;|结果1|D[结束1]  
         C--&gt;|结果2|E[结束2]
-    </code></pre>
+    </code></pre></div>
+    
     <h1 id="5">5 转义</h1>
     <p>\ </p>
     <p>\a </p>
diff --git a/styles.css b/Static/styles.css
similarity index 100%
rename from styles.css
rename to Static/styles.css