diff --git a/wwwroot/api/task_tree.dspy b/wwwroot/api/task_tree.dspy
index c5c421e..9caa3e8 100644
--- a/wwwroot/api/task_tree.dspy
+++ b/wwwroot/api/task_tree.dspy
@@ -144,6 +144,10 @@ async with DBPools().sqlorContext(dbname) as sor:
             # 阶段列表
             role_cnt = {}
             for t in iter_tasks:
+                # 子任务（有 parent_id）挂在父任务下展示，不计入阶段计数，
+                # 否则阶段节点计数与点开后的平铺任务数不一致（计数含子任务、平铺只列顶层任务）。
+                if (getattr(t, 'parent_id', '') or '').strip():
+                    continue
                 r = (getattr(t, 'role', '') or '').strip()
                 role_cnt[r] = role_cnt.get(r, 0) + 1
             nodes = []