diff --git a/lib/renderer.js b/lib/renderer.js
index feb0f7c..7b8f769 100644
--- a/lib/renderer.js
+++ b/lib/renderer.js
@@ -5,7 +5,7 @@ const { marked } = require('marked');
 let JSDOM,
   createDOMPurify;
 
-const { encodeURL, slugize, stripHTML, url_for, isExternalLink, escapeHTML: escape } = require('hexo-util');
+const { encodeURL, slugize, stripHTML, url_for, isExternalLink, escapeHTML: escape, unescapeHTML: unescape } = require('hexo-util');
 const MarkedRenderer = marked.Renderer;
 const MarkedTokenizer = marked.Tokenizer;
 const { basename, dirname, extname, join } = require('path').posix;
@@ -13,7 +13,7 @@ const rATag = /<a(?:\s+?|\s+?[^<>]+\s+?)?href=["'](?:#)([^<>"']+)["'][^<>]*>/i;
 const rDlSyntax = /(?:^|\s)(\S.+)<br>:\s+(\S.+)/;
 
 const anchorId = (str, transformOption) => {
-  return slugize(str.trim(), {transform: transformOption});
+  return slugize(stripHTML(unescape(str)).trim(), { transform: transformOption });
 };
 
 class Renderer extends MarkedRenderer {
@@ -33,13 +33,13 @@ class Renderer extends MarkedRenderer {
     }
 
     const transformOption = modifyAnchors;
-    let id = anchorId(stripHTML(text), transformOption);
+    let id = anchorId(text, transformOption);
     const headingId = _headingId;
 
     const anchorAliasOpt = anchorAlias && text.startsWith('<a href="#');
     if (anchorAliasOpt) {
       const customAnchor = text.match(rATag)[1];
-      id = anchorId(stripHTML(customAnchor), transformOption);
+      id = anchorId(customAnchor, transformOption);
     }
 
     // Add a number after id if repeated
@@ -208,14 +208,14 @@ module.exports = function(data, options) {
 
   // exec filter to extend renderer.
   const renderer = new Renderer(this);
-  this.execFilterSync('marked:renderer', renderer, {context: this});
+  this.execFilterSync('marked:renderer', renderer, { context: this });
 
   const tokenizer = new Tokenizer();
-  this.execFilterSync('marked:tokenizer', tokenizer, {context: this});
+  this.execFilterSync('marked:tokenizer', tokenizer, { context: this });
 
   const extensions = [];
-  this.execFilterSync('marked:extensions', extensions, {context: this});
-  marked.use({extensions});
+  this.execFilterSync('marked:extensions', extensions, { context: this });
+  marked.use({ extensions });
 
   let postPath = '';
   if (path && post_asset_folder && prependRoot && postAsset) {
diff --git a/test/index.js b/test/index.js
index 96569e7..84994c3 100644
--- a/test/index.js
+++ b/test/index.js
@@ -74,6 +74,14 @@ describe('Marked renderer', () => {
     ].join(''));
   });
 
+  it('should use unescaped heading text https://github.com/hexojs/hexo-renderer-marked/issues/246', () => {
+    const body = '## 1.1 aaa/bbb';
+
+    const result = r({ text: body });
+
+    result.should.eql('<h2 id="1-1-aaa-bbb"><a href="#1-1-aaa-bbb" class="headerlink" title="1.1 aaa&#x2F;bbb"></a>1.1 aaa&#x2F;bbb</h2>');
+  });
+
   describe('anchorAlias', () => {
     beforeEach(() => { hexo.config.marked.anchorAlias = true; });