diff --git a/app/comments.js b/app/comments.js
index 25e2642..da84924 100644
--- a/app/comments.js
+++ b/app/comments.js
@@ -64,24 +64,27 @@ function newFindingsOnly(findings) {
   return findings.filter(f => f.is_new !== false);
 }
 
+// 等級無法歸入 critical/warning/info（例如缺漏或無法辨識）時，歸入「無法標示」
+const isUnclassified = f => !LEVEL_ORDER.includes(f.level);
+
 export function formatFindingsStats(findings) {
   const oldFindings = findings.filter(f => f.is_new === false);
   const newFindings = newFindingsOnly(findings);
-  const row = (label, items) => `| ${label} | ${countBy(items, f => f.level === 'critical')} 筆 | ${countBy(items, f => f.level === 'warning')} 筆 | ${countBy(items, f => f.level === 'info')} 筆 |`;
+  const row = (label, items) => `| ${label} | ${countBy(items, f => f.level === 'critical')} 筆 | ${countBy(items, f => f.level === 'warning')} 筆 | ${countBy(items, f => f.level === 'info')} 筆 | ${countBy(items, isUnclassified)} 筆 |`;
 
   return [
-    '| 類型 | 🔴 嚴重 | 🟡 警告 | 🔵 建議 |',
-    '| --- | --- | --- | --- |',
-    row('舊問題', oldFindings),
+    '| 類型 | 🔴 嚴重 | 🟡 警告 | 🔵 建議 | ⚪ 無法標示 |',
+    '| --- | --- | --- | --- | --- |',
     row('新問題', newFindings),
+    row('舊問題', oldFindings),
   ].join('\n');
 }
 
 export function formatFindingsStatsLine(findings) {
   const oldFindings = findings.filter(f => f.is_new === false);
   const newFindings = newFindingsOnly(findings);
-  const row = items => `嚴重${countBy(items, f => f.level === 'critical')} / 警告${countBy(items, f => f.level === 'warning')} / 建議${countBy(items, f => f.level === 'info')}`;
-  return `舊: ${row(oldFindings)}；新: ${row(newFindings)}`;
+  const row = items => `嚴重${countBy(items, f => f.level === 'critical')} / 警告${countBy(items, f => f.level === 'warning')} / 建議${countBy(items, f => f.level === 'info')} / 無法標示${countBy(items, isUnclassified)}`;
+  return `新: ${row(newFindings)}；舊: ${row(oldFindings)}`;
 }
 
 function buildReviewSummary(findings, usageSection = '') {