diff --git a/mo_alphasift_bridge.py b/mo_alphasift_bridge.py
index 9534cda..75c321b 100644
--- a/mo_alphasift_bridge.py
+++ b/mo_alphasift_bridge.py
@@ -29,6 +29,9 @@ MAX_ADD = 5
 POLL_INTERVAL = 5
 POLL_TIMEOUT = 300
 
+# 全局开关: ALPHASIFT_ENABLED=true 才执行选股
+ALPHASIFT_ENABLED = os.environ.get("ALPHASIFT_ENABLED", "false").lower() == "true"
+
 
 def load_json(path):
     try: return json.loads(path.read_text(encoding="utf-8"))
@@ -107,6 +110,9 @@ def run_one_strategy(strategy, market, max_results):
 
 def run_all(strategies_str, market, max_results, dry_run=False):
     """多策略并行 → 合并去重 → MoFin 自选池"""
+    if not ALPHASIFT_ENABLED and not dry_run:
+        print("AlphaSift 已禁用。设置 ALPHASIFT_ENABLED=true 或 --enable 启用。")
+        return
     strategies = [s.strip() for s in strategies_str.split(",") if s.strip()]
     now = datetime.now()
     date_str = now.strftime("%Y-%m-%d")
@@ -231,9 +237,13 @@ def main():
     p.add_argument("--market", default=DEFAULT_MARKET)
     p.add_argument("--max", type=int, default=DEFAULT_MAX)
     p.add_argument("--min-score", type=int, default=MIN_SCORE)
+    p.add_argument("--enable", action="store_true", help="覆盖 ALPHASIFT_ENABLED 开关")
     p.add_argument("--dry-run", action="store_true")
     args = p.parse_args()
     MIN_SCORE = args.min_score
+    if args.enable:
+        global ALPHASIFT_ENABLED
+        ALPHASIFT_ENABLED = True
     if args.strategy == "list": list_strategies()
     else: run_all(args.strategy, args.market, args.max, args.dry_run)