diff --git a/server/tracker/services/stats.py b/server/tracker/services/stats.py
index 557dbe4..3c791ba 100644
--- a/server/tracker/services/stats.py
+++ b/server/tracker/services/stats.py
@@ -3,24 +3,34 @@ from django.utils import timezone
 from tracker.models import DailyStat, Event, VisitSession, Visitor
 
 
-def refresh_daily(site, date) -> DailyStat:
-    """重算某站点某自然日的聚合（幂等，update_or_create）。
+def daily_counts(site, date) -> dict:
+    """四指标共享口径（site=None 聚合全部站点）。所有指标排除爬虫。
 
     日界取 TIME_ZONE（Asia/Shanghai）自然日：make_aware(datetime.combine(date, time.min))。
     口径：pv/uv 均从事件表统计（排除 is_bot），uv=distinct visitor，与 pv 同源；
-    sessions 按会话 started_at 落入当日且访客非爬虫；new_visitors 按 Visitor.first_seen_at 落入当日（同样排除爬虫访客，四指标口径统一）。
+    sessions 按会话 started_at 落入当日且访客非爬虫；new_visitors 按 Visitor.first_seen_at 落入当日。
+    refresh_daily 落库与 dashboard 今日实时位共用此函数，防两处口径漂移（Task8 审查结论）。
     """
     day_start = timezone.make_aware(datetime.combine(date, time.min))
     day_end = day_start + timedelta(days=1)
-    pv = Event.objects.filter(site=site, is_bot=False,
-                              occurred_at__gte=day_start, occurred_at__lt=day_end).count()
-    uv = Event.objects.filter(site=site, is_bot=False, occurred_at__gte=day_start,
-                              occurred_at__lt=day_end).values("visitor").distinct().count()
-    sessions = VisitSession.objects.filter(site=site, visitor__is_bot=False,
-                                           started_at__gte=day_start,
-                                           started_at__lt=day_end).count()
-    new_v = Visitor.objects.filter(site=site, is_bot=False, first_seen_at__gte=day_start,
-                                   first_seen_at__lt=day_end).count()
+    ev = Event.objects.filter(is_bot=False,
+                              occurred_at__gte=day_start, occurred_at__lt=day_end)
+    vs = VisitSession.objects.filter(visitor__is_bot=False,
+                                     started_at__gte=day_start, started_at__lt=day_end)
+    vis = Visitor.objects.filter(is_bot=False,
+                                 first_seen_at__gte=day_start, first_seen_at__lt=day_end)
+    if site is not None:
+        ev = ev.filter(site=site)
+        vs = vs.filter(site=site)
+        vis = vis.filter(site=site)
+    return {"pv": ev.count(),
+            "uv": ev.values("visitor").distinct().count(),
+            "sessions": vs.count(),
+            "new_visitors": vis.count()}
+
+
+def refresh_daily(site, date) -> DailyStat:
+    """重算某站点某自然日的聚合（幂等，update_or_create）。指标口径见 daily_counts。"""
     obj, _ = DailyStat.objects.update_or_create(site=site, date=date,
-        defaults={"pv": pv, "uv": uv, "sessions": sessions, "new_visitors": new_v})
+                                                defaults=daily_counts(site, date))
     return obj