diff --git a/src/main/services/telemetryStats.ts b/src/main/services/telemetryStats.ts
index 15d07b0..bdbb918 100644
--- a/src/main/services/telemetryStats.ts
+++ b/src/main/services/telemetryStats.ts
@@ -24,6 +24,8 @@ interface DailyRow {
   ollama_recovered: number;
   ollama_recheck_manual: number;
   ai_retry_manual: number;
+  tag_vocab_hit: number;
+  tag_vocab_miss: number;
 }
 
 export interface StatsResult {
@@ -47,6 +49,8 @@ export function aggregateStats(events: TelemetryEvent[], generatedAt: Date): Sta
   let ollamaRecheckManualCount = 0;
   let aiRetryManualCount = 0;
   let aiRetryManualFailedSum = 0;
+  let tagVocabHitCount = 0;
+  let tagVocabMissCount = 0;
   for (const ev of events) {
     const day = kstDate(ev.ts);
     let row = byDay.get(day);
@@ -57,7 +61,8 @@ export function aggregateStats(events: TelemetryEvent[], generatedAt: Date): Sta
         trash: 0, restore: 0, permanent_delete: 0, empty_trash: 0,
         expired_banner_shown: 0, expired_batch_trash: 0,
         ollama_unreachable: 0, ollama_recovered: 0, ollama_recheck_manual: 0,
-        ai_retry_manual: 0
+        ai_retry_manual: 0,
+        tag_vocab_hit: 0, tag_vocab_miss: 0
       };
       byDay.set(day, row);
     }
@@ -99,6 +104,12 @@ export function aggregateStats(events: TelemetryEvent[], generatedAt: Date): Sta
       row.ai_retry_manual += 1;
       aiRetryManualCount += 1;
       aiRetryManualFailedSum += ev.payload.failedCount;
+    } else if (ev.kind === 'tag_vocab_hit') {
+      row.tag_vocab_hit += 1;
+      tagVocabHitCount += 1;
+    } else if (ev.kind === 'tag_vocab_miss') {
+      row.tag_vocab_miss += 1;
+      tagVocabMissCount += 1;
     }
   }
   const days = Array.from(byDay.values()).sort((a, b) => a.date.localeCompare(b.date));
@@ -115,6 +126,10 @@ export function aggregateStats(events: TelemetryEvent[], generatedAt: Date): Sta
     ? 'N/A'
     : `${Math.round(ollamaDowntimeSum / ollamaRecoveredCount)}`;
   const totalUnreachable = days.reduce((s, r) => s + r.ollama_unreachable, 0);
+  const tagVocabTotal = tagVocabHitCount + tagVocabMissCount;
+  const tagVocabSummary = tagVocabTotal === 0
+    ? '(데이터 없음)'
+    : `hit/miss = ${tagVocabHitCount}/${tagVocabMissCount} (적중률 ${(tagVocabHitCount / tagVocabTotal * 100).toFixed(1)}%)`;
   const lines: string[] = [];
   lines.push('# Inkling Telemetry Stats');
   lines.push('');
@@ -123,10 +138,10 @@ export function aggregateStats(events: TelemetryEvent[], generatedAt: Date): Sta
   lines.push('');
   lines.push('## 일자별 카운트');
   lines.push('');
-  lines.push('| 일자 | capture | ai_succeeded | ai_failed | trash | restore | permanent_delete | empty_trash | expired_banner_shown | expired_batch_trash | ollama_unreachable | ollama_recovered | ollama_recheck_manual | ai_retry_manual |');
-  lines.push('|------|---------|--------------|-----------|-------|---------|------------------|-------------|----------------------|---------------------|--------------------|------------------|----------------------|-----------------|');
+  lines.push('| 일자 | capture | ai_succeeded | ai_failed | trash | restore | permanent_delete | empty_trash | expired_banner_shown | expired_batch_trash | ollama_unreachable | ollama_recovered | ollama_recheck_manual | ai_retry_manual | tag_vocab_hit | tag_vocab_miss |');
+  lines.push('|------|---------|--------------|-----------|-------|---------|------------------|-------------|----------------------|---------------------|--------------------|------------------|----------------------|-----------------|---------------|----------------|');
   for (const row of days) {
-    lines.push(`| ${row.date} | ${row.capture} | ${row.ai_succeeded} | ${row.ai_failed} | ${row.trash} | ${row.restore} | ${row.permanent_delete} | ${row.empty_trash} | ${row.expired_banner_shown} | ${row.expired_batch_trash} | ${row.ollama_unreachable} | ${row.ollama_recovered} | ${row.ollama_recheck_manual} | ${row.ai_retry_manual} |`);
+    lines.push(`| ${row.date} | ${row.capture} | ${row.ai_succeeded} | ${row.ai_failed} | ${row.trash} | ${row.restore} | ${row.permanent_delete} | ${row.empty_trash} | ${row.expired_banner_shown} | ${row.expired_batch_trash} | ${row.ollama_unreachable} | ${row.ollama_recovered} | ${row.ollama_recheck_manual} | ${row.ai_retry_manual} | ${row.tag_vocab_hit} | ${row.tag_vocab_miss} |`);
   }
   lines.push('');
   lines.push('## 핵심 ratio');
@@ -139,6 +154,7 @@ export function aggregateStats(events: TelemetryEvent[], generatedAt: Date): Sta
   lines.push(`- 평균 downtimeMs (recovered): ${avgDowntime}`);
   lines.push(`- 수동 recheck 사용량: ${ollamaRecheckManualCount}건`);
   lines.push(`- AI 수동 재시도: ${aiRetryManualCount}회 / 누적 ${aiRetryManualFailedSum}건`);
+  lines.push(`- 태그 vocab: ${tagVocabSummary}`);
   lines.push('');
   return { md: lines.join('\n'), eventCount };
 }
diff --git a/tests/unit/telemetryStats.test.ts b/tests/unit/telemetryStats.test.ts
index 0631efc..4fa74b5 100644
--- a/tests/unit/telemetryStats.test.ts
+++ b/tests/unit/telemetryStats.test.ts
@@ -164,3 +164,27 @@ describe('aggregateStats — ai_retry_manual', () => {
     expect(r.md).toMatch(/AI 수동 재시도.*2회.*10건/);
   });
 });
+
+describe('aggregateStats — tag_vocab hit/miss', () => {
+  it('aggregates tag_vocab hit/miss with success rate', () => {
+    const events: TelemetryEvent[] = [
+      e('2026-05-02T00:00:00Z', 'tag_vocab_hit', { tagId: 1, vocabSize: 10 }),
+      e('2026-05-02T00:00:01Z', 'tag_vocab_hit', { tagId: 2, vocabSize: 10 }),
+      e('2026-05-02T00:00:02Z', 'tag_vocab_hit', { tagId: 3, vocabSize: 10 }),
+      e('2026-05-02T00:00:03Z', 'tag_vocab_hit', { tagId: 4, vocabSize: 10 }),
+      e('2026-05-02T00:00:04Z', 'tag_vocab_hit', { tagId: 5, vocabSize: 10 }),
+      e('2026-05-02T00:00:05Z', 'tag_vocab_miss', { vocabSize: 10 }),
+      e('2026-05-02T00:00:06Z', 'tag_vocab_miss', { vocabSize: 10 }),
+      e('2026-05-02T00:00:07Z', 'tag_vocab_miss', { vocabSize: 10 })
+    ];
+    const r = aggregateStats(events, new Date('2026-05-03T00:00:00Z'));
+    expect(r.md).toContain('태그 vocab: hit/miss = 5/3');
+    expect(r.md).toContain('적중률 62.5%');
+  });
+
+  it('태그 vocab summary shows 데이터 없음 when no events', () => {
+    const r = aggregateStats([], new Date('2026-05-03T00:00:00Z'));
+    expect(r.md).toContain('태그 vocab');
+    expect(r.md).toContain('데이터 없음');
+  });
+});