diff --git a/scripts/cron_to_xmpp.py b/scripts/cron_to_xmpp.py
index e32acf1e..2365193b 100644
--- a/scripts/cron_to_xmpp.py
+++ b/scripts/cron_to_xmpp.py
@@ -335,17 +335,19 @@ def scan():
     today = datetime.now().strftime("%Y-%m-%d")
     stats = load_silent_stats()
     if stats.get("date") != today:
-        stats = {"date": today, "silent": 0, "short": 0, "script": 0}
+        stats = {"date": today, "silent": 0, "short": 0, "script": 0, "sent": False}
     stats["silent"] += n_silent
     stats["short"] += n_short
     stats["script"] += n_script
     save_silent_stats(stats)
 
-    # 16:30~16:35 发送当日汇总（收盘后）
+    # 收盘后16:35发送一次当日汇总（不重复发）
     now = datetime.now()
     hhmm = now.hour * 60 + now.minute
-    if 990 <= hhmm <= 995:  # 16:30~16:35
+    if hhmm == 995 and not stats.get("sent"):  # 16:35，仅一次
         send_silent_summary(stats)
+        stats["sent"] = True
+        save_silent_stats(stats)
 
     log = f"推送{n_pushed}份，静默拦截{n_silent}份，过短{n_short}份，跳过脚本{n_script}份"
     print(log, file=sys.stderr)