diff --git a/sanguo_api/routes_live.py b/sanguo_api/routes_live.py
index 96fc4fb..3dd46a1 100644
--- a/sanguo_api/routes_live.py
+++ b/sanguo_api/routes_live.py
@@ -243,6 +243,10 @@ def update_live(aid: int, req: LiveUpdateRequest):
     }
     for col, v in field_map.items():
         if v is not None:
+            # 编辑与新建同规:裸 6 位码补交易所后缀(2026-08-14 实况:编辑漏补
+            # → 引擎 "vt_symbol 无法解析,跳过" → 假运行收不到行情)
+            if col == "vt_symbol":
+                v = _normalize_vt_symbol(v)
             sets.append(f"{col}=?"); args.append(v)
     if req.setting is not None:
         sets.append("setting=?"); args.append(json.dumps(req.setting))
diff --git a/tests/api/test_portfolio_live.py b/tests/api/test_portfolio_live.py
index 972dbb5..83156ee 100644
--- a/tests/api/test_portfolio_live.py
+++ b/tests/api/test_portfolio_live.py
@@ -162,3 +162,29 @@ def test_normalize_vt_symbol_bare_code_gets_exchange_suffix():
     assert _normalize_vt_symbol("600000.SSE") == "600000.SSE"
     assert _normalize_vt_symbol("hs300_subset") == "hs300_subset"
     assert _normalize_vt_symbol("") == ""
+
+
+def test_update_live_normalizes_vt_symbol(tmp_path, monkeypatch):
+    """编辑实盘裸码补后缀(2026-08-14 实况:编辑漏补→引擎订阅跳过→假运行)。"""
+    import os
+    from fastapi.testclient import TestClient
+    from sanguo_api.app import create_app
+    from sanguo_api.auth import create_token, set_jwt_config
+    from sanguo_api.routes_live import set_db_path
+
+    set_jwt_config(secret="t", expire_minutes=60)
+    db = os.path.join(str(tmp_path), "l.db")
+    app = create_app(db_path=db)
+    set_db_path(db)
+    c = TestClient(app)
+    h = {"Authorization": f"Bearer {create_token('admin')}"}
+
+    aid = c.post("/api/v1/live/create", json={
+        "name": "t", "account": "A1", "vt_symbol": "600000.SSE",
+        "strategy_class": "AShareDoubleMaStrategy",
+        "strategy_name": "AShareDoubleMa_600000",
+    }, headers=h).json()["account_id"]
+    r = c.put(f"/api/v1/live/{aid}", json={"vt_symbol": "300024"}, headers=h)
+    assert r.status_code == 200
+    acc = c.get(f"/api/v1/live/{aid}", headers=h).json()
+    assert acc["vt_symbol"] == "300024.SZSE"