diff --git a/apps/worker/worker_app/tasks/generation.py b/apps/worker/worker_app/tasks/generation.py
index de1f94075..6a7092671 100755
--- a/apps/worker/worker_app/tasks/generation.py
+++ b/apps/worker/worker_app/tasks/generation.py
@@ -600,11 +600,11 @@ def _download_library_assets(
         下载成功的视频文件 Path 列表
 
     Raises:
-        ValueError: 当 asset_library_id 和 project_id 都为空时
+        ValueError: 当 asset_library_id、project_id 和 asset_ids 都为空时
         RuntimeError: strict=True 时任何下载失败；或指定了 asset_ids 但全部下载失败
     """
-    if not asset_library_id and not project_id:
-        raise ValueError("asset_library_id 和 project_id 至少需要提供一个")
+    if not asset_library_id and not project_id and not asset_ids:
+        raise ValueError("asset_library_id、project_id 或 asset_ids 至少需要提供一个")
 
     try:
         from packages.adapters.sqlalchemy_impl.models import AssetModel
@@ -646,7 +646,11 @@ def _download_library_assets(
             assets = query.order_by(AssetModel.created_at).all()
 
             if not assets:
-                mode_desc = f"素材库 {asset_library_id}" if asset_library_id else f"项目 {project_id}"
+                mode_desc = (
+                    f"素材库 {asset_library_id}"
+                    if asset_library_id
+                    else (f"项目 {project_id}" if project_id else "指定素材")
+                )
                 msg = f"未找到视频素材: {mode_desc}, asset_ids={asset_ids or 'all'}"
                 logger.error(msg)
                 raise RuntimeError(msg)