diff --git a/backend/app/api/doclib.py b/backend/app/api/doclib.py
index d7b187107..629a81698 100644
--- a/backend/app/api/doclib.py
+++ b/backend/app/api/doclib.py
@@ -4,7 +4,13 @@ from sqlalchemy.orm import Session
 
 from app.core.database import get_db
 from app.core.doclib_upload_route import DoclibRoute
-from app.schemas.doclib import DeleteFilesBody, FolderCreateBody, FolderUpdateBody, ShareBody
+from app.schemas.doclib import (
+    BatchShareBody,
+    DeleteFilesBody,
+    FolderCreateBody,
+    FolderUpdateBody,
+    ShareBody,
+)
 from app.services.doclib_service import DoclibService
 from app.services.doclib_storage import download_document, upload_document
 
@@ -87,6 +93,11 @@ def delete_document_files(body: DeleteFilesBody, svc: DoclibService = Depends(se
     return success_response()
 
 
+@router.post('/web/doclib/files/batch-shares')
+def batch_share_documents(body: BatchShareBody, svc: DoclibService = Depends(service)):
+    return success_response(svc.set_shares_batch(body.ids, body.userIds))
+
+
 @router.get('/web/doclib/files/{file_id}')
 def document_detail(file_id: str, svc: DoclibService = Depends(service)):
     return success_response(svc.get_file(file_id))
diff --git a/backend/app/schemas/doclib.py b/backend/app/schemas/doclib.py
index cccf13e4d..93474978a 100644
--- a/backend/app/schemas/doclib.py
+++ b/backend/app/schemas/doclib.py
@@ -28,5 +28,10 @@ class ShareBody(_Body):
     userIds: List[str] = Field(max_length=500)
 
 
+class BatchShareBody(_Body):
+    ids: List[str] = Field(min_length=1, max_length=100)
+    userIds: List[str] = Field(max_length=500)
+
+
 class DeleteFilesBody(_Body):
     ids: List[str] = Field(min_length=1, max_length=100)
diff --git a/backend/app/services/doclib_service.py b/backend/app/services/doclib_service.py
index 0a578a98f..b241f93c9 100644
--- a/backend/app/services/doclib_service.py
+++ b/backend/app/services/doclib_service.py
@@ -228,23 +228,38 @@ class DoclibService:
         self.db.commit()
         return result
 
-    def set_shares(self, file_id, user_ids):
+    def _apply_shares(self, file_id, user_ids):
         row = self._file(file_id, manage=True, lock=True)
         requested = set(user_ids) - {row.create_by}
-        valid = {u.id for u in self._base(SysUser).filter(SysUser.id.in_(requested), SysUser.status == '1').all()}
-        if requested != valid:
-            raise HTTPException(400, '分享人员不存在、已停用或不属于当前租户')
+        if requested:
+            valid = {u.id for u in self._base(SysUser).filter(
+                SysUser.id.in_(requested), SysUser.status == '1').all()}
+            if requested != valid:
+                raise HTTPException(400, '分享人员不存在、已停用或不属于当前租户')
         history = {s.user_id: s for s in self.db.query(DoclibShare).filter(
-            DoclibShare.tenant_no == self.tenant, DoclibShare.file_id == file_id).populate_existing().with_for_update().all()}
+            DoclibShare.tenant_no == self.tenant, DoclibShare.file_id == file_id
+        ).populate_existing().with_for_update().all()}
         for uid, share in history.items():
             share.del_flag = 0 if uid in requested else 1
             share.update_by = self.uid
         for uid in requested - set(history):
             self.db.add(DoclibShare(file_id=file_id, user_id=uid, **self._public()))
         row.update_by, row.update_time = self.uid, datetime.now()
+        return row
+
+    def set_shares(self, file_id, user_ids):
+        row = self._apply_shares(file_id, user_ids)
         self.db.commit()
         return self._serialize_files([row])[0]
 
+    def set_shares_batch(self, ids, user_ids):
+        file_ids = sorted({str(i).strip() for i in ids if str(i).strip()})
+        if not file_ids:
+            raise HTTPException(400, '请选择要设置分享的文档')
+        rows = [self._apply_shares(fid, user_ids) for fid in file_ids]
+        self.db.commit()
+        return self._serialize_files(rows)
+
     def delete_files(self, ids):
         rows = [self._file(fid, manage=True, lock=True) for fid in sorted(set(ids))]
         for row in rows: