diff --git a/pipeline_service/sdlc_ability.py b/pipeline_service/sdlc_ability.py
index 29512a8..3fa2415 100644
--- a/pipeline_service/sdlc_ability.py
+++ b/pipeline_service/sdlc_ability.py
@@ -368,8 +368,16 @@ async def _h_create_task(sor, p, ctx):
     tid = getID()
     # 迭代归属：显式指定 > 当前迭代（该 project 最新创建的迭代）。
     # 「当前迭代」概念：新建迭代后当前迭代即新建的那个，任务默认归到它。
+    # 统一存「迭代名」：agent 可能传迭代 ID 或迭代名，都归一化为迭代名（task_tree 按名匹配）。
     iteration_name = (p.get("iteration_id", "") or "").strip()
-    if not iteration_name:
+    if iteration_name:
+        # 归一化：传的是迭代 ID → 反查迭代名；传的是迭代名 → 反查不到则保持原名
+        irecs = await sor.sqlExe(
+            "SELECT iteration_name FROM sd_iterations WHERE id=${iid}$ AND project_id=${pid}$",
+            {"iid": iteration_name, "pid": pid})
+        if irecs and getattr(irecs[0], 'iteration_name', ''):
+            iteration_name = getattr(irecs[0], 'iteration_name', '')
+    else:
         irecs = await sor.sqlExe(
             "SELECT iteration_name FROM sd_iterations WHERE project_id=${pid}$ ORDER BY created_at DESC LIMIT 1",
             {"pid": pid})