diff --git a/modules/admin.js b/modules/admin.js
index 72673b9..25c87a2 100644
--- a/modules/admin.js
+++ b/modules/admin.js
@@ -325,6 +325,12 @@ app.post('/admin/other', async (req, res) => {
       for (const a of articles) {
         await a.resetReplyCountAndTime();
       }
+    } else if (req.body.type === 'reset_codelen') {
+      const submissions = await JudgeState.query();
+      for (const s of submissions) {
+        s.code_length = s.code.length;
+        await s.save();
+      }
     } else {
       throw new ErrorMessage("操作类型不正确");
     }
diff --git a/views/admin_other.ejs b/views/admin_other.ejs
index d0b1ef6..e422dd0 100644
--- a/views/admin_other.ejs
+++ b/views/admin_other.ejs
@@ -3,6 +3,6 @@
 <form method="post" class="ui form">
   <p><button class="ui blue button" name="type" value="reset_count" type="submit">重新计算提交及 AC 数</button></p>
   <p><button class="ui blue button" name="type" value="reset_discussion" type="submit">重新计算讨论版回复数和回复时间</button></p>
-  <!-- <button name="type" value="reset_size" type="submit">重新计算代码大小</button> -->
+  <p><button class="ui blue button" name="type" value="reset_codelen" type="submit">重新计算提交代码长度</button></p>
 </form>
 <% include admin_footer %>