diff --git a/backend/services/word_service.py b/backend/services/word_service.py
index d91b22a..3fd9113 100644
--- a/backend/services/word_service.py
+++ b/backend/services/word_service.py
@@ -4,7 +4,7 @@ from typing import Optional
 from fastapi import HTTPException
 from sqlalchemy.orm import Session
 
-from models import Word, User
+from models import QuizRecord, Word, User
 
 
 def utc_now_iso() -> str:
@@ -68,6 +68,10 @@ class WordService:
 
     def delete_word(self, db: Session, user: User, word_id: int) -> None:
         word = self.get_word(db, user, word_id)
+        db.query(QuizRecord).filter(QuizRecord.word_id == word.id).delete(
+            synchronize_session=False
+        )
+        db.flush()
         db.delete(word)
         db.commit()
 
diff --git a/frontend/src/components/WordCard.vue b/frontend/src/components/WordCard.vue
index d17d357..15daafa 100644
--- a/frontend/src/components/WordCard.vue
+++ b/frontend/src/components/WordCard.vue
@@ -4,10 +4,13 @@ import { formatTrainSeconds } from '../composables/useQuizTimer'
 
 defineProps<{
   word: Word
+  selectable?: boolean
+  selected?: boolean
 }>()
 
 defineEmits<{
   delete: [id: number]
+  'toggle-select': [id: number]
 }>()
 
 const statusMap: Record<string, string> = {
@@ -33,14 +36,22 @@ function formatEnteredAt(iso: string) {
 </script>
 
 <template>
-  <div class="card word-card">
-    <div class="word-header">
-      <div>
-        <div class="word-pair">{{ enText(word) }} — {{ zhText(word) }}</div>
-        <span :class="['badge', `badge-${word.status}`]">{{ statusMap[word.status] || word.status }}</span>
+  <div class="card word-card" :class="{ 'word-card-selected': selected }">
+    <label v-if="selectable" class="word-select" @click.stop>
+      <input
+        type="checkbox"
+        :checked="selected"
+        @change="$emit('toggle-select', word.id)"
+      />
+    </label>
+    <div class="word-body">
+      <div class="word-header">
+        <div>
+          <div class="word-pair">{{ enText(word) }} — {{ zhText(word) }}</div>
+          <span :class="['badge', `badge-${word.status}`]">{{ statusMap[word.status] || word.status }}</span>
+        </div>
+        <button type="button" class="btn btn-danger" @click="$emit('delete', word.id)">删除</button>
       </div>
-      <button class="btn btn-danger" @click="$emit('delete', word.id)">删除</button>
-    </div>
     <div class="word-meta">
       <span>训练 {{ word.train_count ?? 0 }} 次</span>
       <span>答对 {{ word.correct_count }}</span>
@@ -50,11 +61,36 @@ function formatEnteredAt(iso: string) {
       <span v-if="word.total_train_seconds">用时 {{ formatTrainSeconds(word.total_train_seconds) }}</span>
     </div>
     <div class="word-entered">进入词库：{{ formatEnteredAt(word.entered_at || word.created_at) }}</div>
-    <div v-if="word.review_due_date" class="word-due">下次复习：{{ word.review_due_date }}</div>
+      <div v-if="word.review_due_date" class="word-due">下次复习：{{ word.review_due_date }}</div>
+    </div>
   </div>
 </template>
 
 <style scoped>
+.word-card {
+  display: flex;
+  align-items: flex-start;
+  gap: 10px;
+}
+.word-card-selected {
+  border-color: rgba(79, 110, 247, 0.45);
+  box-shadow: 0 0 0 2px rgba(79, 110, 247, 0.12);
+}
+.word-select {
+  flex-shrink: 0;
+  padding-top: 4px;
+  cursor: pointer;
+}
+.word-select input {
+  width: 18px;
+  height: 18px;
+  accent-color: var(--primary);
+  cursor: pointer;
+}
+.word-body {
+  flex: 1;
+  min-width: 0;
+}
 .word-header {
   display: flex;
   justify-content: space-between;
diff --git a/frontend/src/pages/WordLibrary.vue b/frontend/src/pages/WordLibrary.vue
index cf6df54..c42652d 100644
--- a/frontend/src/pages/WordLibrary.vue
+++ b/frontend/src/pages/WordLibrary.vue
@@ -75,6 +75,10 @@ const wordMemory = ref<WordMemoryDetail | null>(null)
 const wordMemoryLoading = ref(false)
 const memoryModel = ref<MemoryTransformerPredict | null>(null)
 const memoryModelLoading = ref(false)
+const listEditMode = ref(false)
+const selectedIds = ref<Set<number>>(new Set())
+const batchDeleting = ref(false)
+const pageSelectRef = ref<HTMLInputElement | null>(null)
 
 const {
   graphStatusFilter,
@@ -117,6 +121,53 @@ const pageSummary = computed(() => {
   return `第 ${currentPage.value} / ${totalPages.value} 页，显示 ${start}–${end}，共 ${words.value.length} 个`
 })
 
+const selectedCount = computed(() => selectedIds.value.size)
+
+const allPageSelected = computed(() => {
+  if (!paginatedWords.value.length) return false
+  return paginatedWords.value.every((w) => selectedIds.value.has(w.id))
+})
+
+const pageSelectIndeterminate = computed(() => {
+  const pageIds = paginatedWords.value.map((w) => w.id)
+  const selectedOnPage = pageIds.filter((id) => selectedIds.value.has(id)).length
+  return selectedOnPage > 0 && selectedOnPage < pageIds.length
+})
+
+function clearSelection() {
+  selectedIds.value = new Set()
+}
+
+function enterListEdit() {
+  listEditMode.value = true
+}
+
+function exitListEdit() {
+  listEditMode.value = false
+  clearSelection()
+}
+
+function toggleWordSelect(id: number) {
+  const next = new Set(selectedIds.value)
+  if (next.has(id)) next.delete(id)
+  else next.add(id)
+  selectedIds.value = next
+}
+
+function togglePageSelect() {
+  const next = new Set(selectedIds.value)
+  if (allPageSelected.value) {
+    paginatedWords.value.forEach((w) => next.delete(w.id))
+  } else {
+    paginatedWords.value.forEach((w) => next.add(w.id))
+  }
+  selectedIds.value = next
+}
+
+function selectAllWords() {
+  selectedIds.value = new Set(words.value.map((w) => w.id))
+}
+
 function clampPage() {
   if (currentPage.value > totalPages.value) {
     currentPage.value = totalPages.value
@@ -163,10 +214,33 @@ async function loadViz() {
 async function handleDelete(id: number) {
   if (!confirm('确定删除这个单词？')) return
   await api.deleteWord(id)
+  if (selectedIds.value.has(id)) {
+    const next = new Set(selectedIds.value)
+    next.delete(id)
+    selectedIds.value = next
+  }
   await loadWords()
   if (activeView.value === 'memory') await loadViz()
 }
 
+async function handleBatchDelete() {
+  const ids = [...selectedIds.value]
+  if (!ids.length) return
+  if (!confirm(`确定删除选中的 ${ids.length} 个单词？`)) return
+  batchDeleting.value = true
+  try {
+    const results = await Promise.allSettled(ids.map((id) => api.deleteWord(id)))
+    const failed = results.filter((r) => r.status === 'rejected').length
+    clearSelection()
+    await loadWords()
+    if (failed > 0) {
+      alert(`${failed} 个单词删除失败，请重试`)
+    }
+  } finally {
+    batchDeleting.value = false
+  }
+}
+
 async function loadWordMemory(wordId: number) {
   wordMemoryLoading.value = true
   memoryModelLoading.value = true
@@ -252,12 +326,21 @@ watch(selectedWord, (w) => {
 
 watch(activeTab, () => {
   currentPage.value = 1
+  exitListEdit()
   if (activeView.value === 'list') loadWords()
 })
 
+watch([allPageSelected, pageSelectIndeterminate], () => {
+  if (pageSelectRef.value) {
+    pageSelectRef.value.indeterminate = pageSelectIndeterminate.value
+  }
+})
+
 watch(activeView, (v) => {
-  if (v === 'list') loadWords()
-  else {
+  if (v === 'list') {
+    loadWords()
+  } else {
+    exitListEdit()
     refreshGraphPracticeResults()
     loadViz()
   }
@@ -338,8 +421,55 @@ onMounted(() => {
             ›
           </button>
         </Teleport>
+        <div class="bulk-bar" :class="{ editing: listEditMode }">
+          <button
+            v-if="!listEditMode"
+            type="button"
+            class="btn btn-outline bulk-edit"
+            @click="enterListEdit"
+          >
+            编辑
+          </button>
+          <template v-else>
+            <label class="bulk-select">
+              <input
+                ref="pageSelectRef"
+                type="checkbox"
+                :checked="allPageSelected"
+                @change="togglePageSelect"
+              />
+              全选本页
+            </label>
+            <button
+              v-if="words.length > paginatedWords.length"
+              type="button"
+              class="bulk-link"
+              @click="selectAllWords"
+            >
+              全选全部 {{ words.length }} 个
+            </button>
+            <span v-if="selectedCount" class="bulk-count">已选 {{ selectedCount }} 个</span>
+            <button
+              type="button"
+              class="btn btn-danger bulk-delete"
+              :disabled="!selectedCount || batchDeleting"
+              @click="handleBatchDelete"
+            >
+              {{ batchDeleting ? '删除中...' : '批量删除' }}
+            </button>
+            <button type="button" class="bulk-done" @click="exitListEdit">完成</button>
+          </template>
+        </div>
         <p class="page-summary">{{ pageSummary }}</p>
-        <WordCard v-for="w in paginatedWords" :key="w.id" :word="w" @delete="handleDelete" />
+        <WordCard
+          v-for="w in paginatedWords"
+          :key="w.id"
+          :word="w"
+          :selectable="listEditMode"
+          :selected="selectedIds.has(w.id)"
+          @delete="handleDelete"
+          @toggle-select="toggleWordSelect"
+        />
         <div v-if="totalPages > 1" class="pagination">
           <button
             type="button"
@@ -556,6 +686,70 @@ onMounted(() => {
   border-radius: 6px;
   border: 1px solid var(--border);
 }
+.bulk-bar {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 10px 12px;
+  margin-bottom: 12px;
+}
+.bulk-bar.editing {
+  padding: 10px 12px;
+  background: var(--card);
+  border-radius: var(--radius);
+  border: 1px solid var(--border);
+  box-shadow: var(--shadow);
+}
+.bulk-edit {
+  width: auto;
+  padding: 8px 16px;
+  font-size: 14px;
+  margin-left: auto;
+}
+.bulk-done {
+  margin-left: auto;
+  border: none;
+  background: transparent;
+  color: var(--primary);
+  font-size: 14px;
+  font-weight: 600;
+  cursor: pointer;
+  padding: 8px 4px;
+}
+.bulk-select {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 14px;
+  font-weight: 600;
+  cursor: pointer;
+  user-select: none;
+}
+.bulk-select input {
+  width: 18px;
+  height: 18px;
+  accent-color: var(--primary);
+  cursor: pointer;
+}
+.bulk-link {
+  border: none;
+  background: transparent;
+  color: var(--primary);
+  font-size: 13px;
+  font-weight: 600;
+  cursor: pointer;
+  padding: 0;
+}
+.bulk-count {
+  font-size: 13px;
+  color: var(--muted);
+}
+.bulk-delete {
+  margin-left: auto;
+  width: auto;
+  padding: 8px 14px;
+  font-size: 13px;
+}
 .page-summary {
   font-size: 13px;
   color: var(--muted);