diff --git a/template/app_admin/admin_setting.html b/template/app_admin/admin_setting.html
index cb29224..3fc210d 100644
--- a/template/app_admin/admin_setting.html
+++ b/template/app_admin/admin_setting.html
@@ -135,6 +135,15 @@
                     <div class="layui-form-mid layui-word-aux">开启后文档中的图片将显示为最大宽度350px的缩略图</div>
                   </div>
                   <hr>
+                  <!-- 长代码展开 -->
+                  <div class="layui-form-item">
+                    <label class="layui-form-label">长代码展开</label>
+                    <div class="layui-input-inline">
+                      <input type="checkbox" name="long_code" lay-skin="switch" lay-text="开启|关闭"  {% if long_code %}checked{% endif %}>
+                    </div>
+                    <div class="layui-form-mid layui-word-aux">文档页面代码块默认最高500px，超出将滚动显示，开启后代码块将按原高度显示。</div>
+                  </div>
+                  <hr>
 
                   <div class="layui-form-item layui-form-text">
                     <label class="layui-form-label">统计代码</label>