diff --git a/web-admin/src/views/doclib/enter/ShareDialog.vue b/web-admin/src/views/doclib/enter/ShareDialog.vue
index a92ccde68..c61ba47b7 100644
--- a/web-admin/src/views/doclib/enter/ShareDialog.vue
+++ b/web-admin/src/views/doclib/enter/ShareDialog.vue
@@ -11,11 +11,13 @@
     :close-on-press-escape="!saving"
     :show-close="!saving"
   >
-    <p class="doclib-summary">{{ document?.name }}</p>
+    <p class="doclib-summary">{{ summaryText }}</p>
     <el-form label-position="top">
       <el-form-item>
         <template #label
-          >分享给<span class="form-label-tip">可多选，取消选择即收回访问权限</span></template
+          >分享给<span class="form-label-tip"
+            >可多选，取消选择即收回访问权限；保存后对所选文档整份覆盖</span
+          ></template
         >
         <el-select
           v-model="userIds"
@@ -56,15 +58,15 @@
   import { Close, Check } from '@element-plus/icons-vue'
   import {
     fetchDoclibUsers,
-    saveDoclibShares,
+    saveDoclibBatchShares,
     type DoclibDocument,
     type DoclibPerson
   } from '@/api/doclib'
-  import { createLatestRequest } from './model'
-  const props = defineProps<{ modelValue: boolean; document: DoclibDocument | null }>()
+  import { createLatestRequest, shareUserIntersection } from './model'
+  const props = defineProps<{ modelValue: boolean; documents: DoclibDocument[] }>()
   const emit = defineEmits<{
     'update:modelValue': [value: boolean]
-    saved: [document: DoclibDocument]
+    saved: [documents: DoclibDocument[]]
   }>()
   const visible = computed({
     get: () => props.modelValue,
@@ -77,17 +79,31 @@
   const userIds = ref<string[]>([])
   const people = ref<DoclibPerson[]>([])
   const requests = createLatestRequest()
+  const ownerIds = computed(
+    () => new Set(props.documents.map((doc) => doc.ownerId).filter(Boolean))
+  )
+  const summaryText = computed(() => {
+    const names = props.documents.map((doc) => doc.name).filter(Boolean)
+    if (!names.length) return '未选择文档'
+    if (names.length === 1) return names[0]
+    const shown = names.slice(0, 5)
+    const more = names.length > 5 ? `等 ${names.length} 个` : ''
+    return `已选 ${names.length} 个文档：${shown.join('、')}${more ? ` ${more}` : ''}`
+  })
   const options = computed(() => {
-    const candidates = new Map((props.document?.shares || []).map((person) => [person.id, person]))
+    const candidates = new Map<string, DoclibPerson>()
+    for (const doc of props.documents) {
+      for (const person of doc.shares || []) candidates.set(person.id, person)
+    }
     people.value.forEach((person) => candidates.set(person.id, person))
-    return [...candidates.values()].filter((person) => person.id !== props.document?.ownerId)
+    return [...candidates.values()].filter((person) => !ownerIds.value.has(person.id))
   })
   watch(
     () => props.modelValue,
     (value) => {
       requests.invalidate()
       if (!value) return
-      userIds.value = (props.document?.shares || []).map((person) => person.id)
+      userIds.value = shareUserIntersection(props.documents)
       people.value = []
       void searchUsers('')
     }
@@ -109,12 +125,17 @@
     }
   }
   async function save() {
-    if (!props.document?.canManage || saving.value) return
+    if (!props.documents.length || props.documents.some((doc) => !doc.canManage) || saving.value) {
+      return
+    }
     saving.value = true
     try {
-      const updated = await saveDoclibShares(props.document.id, userIds.value)
+      const updated = await saveDoclibBatchShares(
+        props.documents.map((doc) => doc.id),
+        userIds.value
+      )
       ElMessage.success('分享设置已保存')
-      emit('saved', updated)
+      emit('saved', updated || [])
       emit('update:modelValue', false)
     } catch {
       /* 请求层统一展示错误 */
diff --git a/web-admin/src/views/doclib/enter/browser.test.mjs b/web-admin/src/views/doclib/enter/browser.test.mjs
index 5d5f17934..334f3b313 100644
--- a/web-admin/src/views/doclib/enter/browser.test.mjs
+++ b/web-admin/src/views/doclib/enter/browser.test.mjs
@@ -95,6 +95,12 @@ await context.route('**/api/**', async (route) => {
     return ok({ list, total: list.length })
   }
   if (path === '/web/doclib/users') return ok([{ id: 'other', name: '同事', deptName: '生产部' }])
+  if (path === '/web/doclib/files/batch-shares' && req.method() === 'POST') {
+    const body = req.postDataJSON()
+    sharedUsers = body.userIds
+    file.shares = sharedUsers.map((id) => ({ id, name: '同事', deptName: '生产部' }))
+    return ok([file])
+  }
   if (path.endsWith('/shares')) {
     sharedUsers = req.postDataJSON().userIds
     file.shares = sharedUsers.map((id) => ({ id, name: '同事', deptName: '生产部' }))
diff --git a/web-admin/src/views/doclib/enter/index.vue b/web-admin/src/views/doclib/enter/index.vue
index b76f38c31..302a7f1ff 100644
--- a/web-admin/src/views/doclib/enter/index.vue
+++ b/web-admin/src/views/doclib/enter/index.vue
@@ -78,7 +78,7 @@
               >
               <el-button
                 :disabled="!actions.share || loading || busy"
-                @click="openShare(selected[0])"
+                @click="openShare(selected)"
                 ><el-icon><Share /></el-icon>设置分享</el-button
               >
               <el-button
@@ -195,7 +195,7 @@
       @download="download([$event])"
       @view="openDetail"
     />
-    <ShareDialog v-model="shareVisible" :document="shareDocument" @saved="shareSaved" />
+    <ShareDialog v-model="shareVisible" :documents="shareDocuments" @saved="shareSaved" />
     <el-dialog
       v-model="folderVisible"
       :title="renameMode ? '重命名文件夹' : '新建文件夹'"
@@ -489,14 +489,22 @@
     }
   }
   const shareVisible = ref(false)
-  const shareDocument = ref<DoclibDocument | null>(null)
-  function openShare(row: DoclibDocument) {
-    if (!row?.canManage) return
-    shareDocument.value = row
+  const shareDocuments = ref<DoclibDocument[]>([])
+  function openShare(rows: DoclibDocument | DoclibDocument[] | null | undefined) {
+    const list = (Array.isArray(rows) ? rows : rows ? [rows] : []).filter(
+      (row): row is DoclibDocument => !!row?.id && row.canManage
+    )
+    if (!list.length) return
+    shareDocuments.value = list
     shareVisible.value = true
   }
-  function shareSaved(row: DoclibDocument) {
-    if (detail.value?.id === row.id) detail.value = row
+  function shareSaved(rows: DoclibDocument[]) {
+    const updated = Array.isArray(rows) ? rows : []
+    const current = detail.value
+    if (current) {
+      const match = updated.find((row) => row.id === current.id)
+      if (match) detail.value = match
+    }
     void refresh()
   }
   const detailVisible = ref(false)