diff --git a/yunke-server/app/management/api_assembly.py b/yunke-server/app/management/api_assembly.py
index 71c20c9..fbb26bc 100644
--- a/yunke-server/app/management/api_assembly.py
+++ b/yunke-server/app/management/api_assembly.py
@@ -396,7 +396,7 @@ async def lifecycle_customers(
 ) -> list[dict]:
     """drilldown cooling/dormant:该员工账号归属客户(delete_flag 过滤)+
     msg_daily_stats friend 行全历史 → lifecycle.classify(as_of=窗口末日),
-    返回状态匹配行 {friend_id, nickname, last_day, state},按 last_day asc
+    返回状态匹配行 {friend_id, channel, nickname, last_day, state},按 last_day asc
     (最陈旧在前)、friend_id asc 排序。
 
     历史按 (channel, peer) 键控、跨 owner 合并——与批次A _lifecycle_daily
@@ -445,6 +445,7 @@ async def lifecycle_customers(
         if state == want_state:
             matches.append({
                 "friend_id": c.friend_id,
+                "channel": c.channel,
                 "nickname": c.friend_nickname or c.friend_remark or c.friend_id,
                 "last_day": last,
                 "state": state,
@@ -483,6 +484,7 @@ async def fr_fact_rows(
     )).scalars().all()
     items = [{
         "day": f.day,
+        "channel": f.channel,
         "owner_account_id": f.owner_account_id,
         "peer_id": f.peer_id,
         "thread_end_ts": f.thread_end_ts,
diff --git a/yunke-server/tests/test_management_api.py b/yunke-server/tests/test_management_api.py
index 1fe4264..ffd83d0 100644
--- a/yunke-server/tests/test_management_api.py
+++ b/yunke-server/tests/test_management_api.py
@@ -571,6 +571,7 @@ async def test_drilldown_fr_p90(make_client):
     # fr_ms desc + 同值按日 desc 决胜:0902 的 pD 在前
     assert item["fr_ms"] == 600_000
     assert item["peer_id"] == "pD"
+    assert item["channel"] == "wechat"
     assert item["owner_account_id"] == "wx2"
     assert item["chat_hint"] == {"owner_account_id": "wx2", "talker_id": "pD"}
     r = await client.get(url, params={
@@ -618,7 +619,8 @@ async def test_drilldown_lifecycle_customers(make_client):
     assert r.status_code == 200
     body = r.json()
     assert body["total"] == 1  # f2 降温;f1 沉睡、f9 已删
-    assert body["items"][0] == {"friend_id": "f2", "nickname": "客户二",
+    assert body["items"][0] == {"friend_id": "f2", "channel": "wechat",
+                                "nickname": "客户二",
                                 "last_day": 20260825, "state": "cooling"}
 
     r = await client.get("/api/management/employees/u1/drilldown",
@@ -657,7 +659,8 @@ async def test_drilldown_shared_customer_history(make_client):
     body = r.json()
     assert body["total"] == 2  # f1 + f3(历史全在 wx2 名下也不丢)
     f3 = next(i for i in body["items"] if i["friend_id"] == "f3")
-    assert f3 == {"friend_id": "f3", "nickname": "共享客户",
+    assert f3 == {"friend_id": "f3", "channel": "wechat",
+                  "nickname": "共享客户",
                   "last_day": 20260801, "state": "dormant"}
     # 归属口径仍是 Customer.owner(wx1):u2(wx2)名下看不到
     r = await client.get("/api/management/employees/u2/drilldown",