diff --git a/backend/app/services/task_service.py b/backend/app/services/task_service.py
index 68b1831..f8c7304 100644
--- a/backend/app/services/task_service.py
+++ b/backend/app/services/task_service.py
@@ -217,8 +217,8 @@ async def get_all_tasks(
     result = await db.execute(stmt)
     tasks = result.scalars().all()
 
-    # 构造嵌套响应时只返回顶层任务
-    all_tasks = [_to_response(t) for t in tasks if t.parent_task_id is None]
+    # 返回所有匹配的任务（含子任务），不再过滤 parent_task_id
+    all_tasks = [_to_response(t) for t in tasks]
     return TaskListResponse(tasks=all_tasks, total=len(all_tasks))