diff --git a/backend/api/platform_router.py b/backend/api/platform_router.py
index 04289a6..ab522bc 100644
--- a/backend/api/platform_router.py
+++ b/backend/api/platform_router.py
@@ -10,6 +10,7 @@ from services.platform_service import (
     build_platform_overview,
     create_or_update_system_setting,
     delete_system_setting,
+    get_bot_activity_stats,
     get_platform_settings,
     list_system_settings,
     list_activity_events,
@@ -67,6 +68,11 @@ def get_platform_usage(
     return list_usage(session, bot_id=bot_id, limit=limit, offset=offset)
 
 
+@router.get("/api/platform/activity-stats")
+def get_platform_activity_stats(session: Session = Depends(get_session)):
+    return {"items": get_bot_activity_stats(session)}
+
+
 @router.get("/api/platform/events")
 def get_platform_events(bot_id: Optional[str] = None, limit: int = 100, session: Session = Depends(get_session)):
     return {"items": list_activity_events(session, bot_id=bot_id, limit=limit)}
diff --git a/backend/services/platform_service.py b/backend/services/platform_service.py
index 7752003..20e5faf 100644
--- a/backend/services/platform_service.py
+++ b/backend/services/platform_service.py
@@ -1,4 +1,5 @@
 from services.platform_activity_service import (
+    get_bot_activity_stats,
     list_activity_events,
     prune_expired_activity_events,
     record_activity_event,
diff --git a/frontend/src/modules/platform/PlatformAdminDashboardPage.tsx b/frontend/src/modules/platform/PlatformAdminDashboardPage.tsx
index 7dd1212..035a160 100644
--- a/frontend/src/modules/platform/PlatformAdminDashboardPage.tsx
+++ b/frontend/src/modules/platform/PlatformAdminDashboardPage.tsx
@@ -37,7 +37,7 @@ export function PlatformAdminDashboardPage({ compactMode }: PlatformAdminDashboa
           <PlatformBotActivityAnalyticsSection
             isZh={dashboard.isZh}
             activityStats={dashboard.activityStats}
-            loading={dashboard.loading}
+            loading={dashboard.activityLoading}
           />
         </div>
       </div>
diff --git a/frontend/src/modules/platform/hooks/usePlatformDashboard.ts b/frontend/src/modules/platform/hooks/usePlatformDashboard.ts
index c9e7169..4bf808b 100644
--- a/frontend/src/modules/platform/hooks/usePlatformDashboard.ts
+++ b/frontend/src/modules/platform/hooks/usePlatformDashboard.ts
@@ -12,6 +12,7 @@ import {
   writeCachedPlatformPageSize,
 } from '../../../utils/platformPageSize';
 import type {
+  BotActivityStatsItem,
   PlatformBotResourceSnapshot,
   PlatformOverviewResponse,
   PlatformSettings,
@@ -52,6 +53,8 @@ export function usePlatformDashboard({ compactMode }: UsePlatformDashboardOption
   const [resourceError, setResourceError] = useState('');
   const [usageData, setUsageData] = useState<PlatformUsageResponse | null>(null);
   const [usageLoading, setUsageLoading] = useState(false);
+  const [activityStatsData, setActivityStatsData] = useState<BotActivityStatsItem[] | null>(null);
+  const [activityLoading, setActivityLoading] = useState(false);
   const [usagePage, setUsagePage] = useState(1);
   const [usagePageSize, setUsagePageSize] = useState(() => readCachedPlatformPageSize(10));
   const [pageSizeReady, setPageSizeReady] = useState(true);
@@ -131,6 +134,18 @@ export function usePlatformDashboard({ compactMode }: UsePlatformDashboardOption
     }
   }, [isZh, notify, usagePageSize]);
 
+  const loadActivityStats = useCallback(async () => {
+    setActivityLoading(true);
+    try {
+      const res = await axios.get<{ items: BotActivityStatsItem[] }>(`${APP_ENDPOINTS.apiBase}/platform/activity-stats`);
+      setActivityStatsData(Array.isArray(res.data?.items) ? res.data.items : []);
+    } catch (error: any) {
+      notify(error?.response?.data?.detail || (isZh ? '读取 Bot 活跃度统计失败。' : 'Failed to load bot activity analytics.'), { tone: 'error' });
+    } finally {
+      setActivityLoading(false);
+    }
+  }, [isZh, notify]);
+
   const loadSelectedBotUsageSummary = useCallback(async (botId: string) => {
     if (!botId) {
       setSelectedBotUsageSummary(null);
@@ -174,6 +189,10 @@ export function usePlatformDashboard({ compactMode }: UsePlatformDashboardOption
     void loadUsage(1);
   }, [loadUsage, pageSizeReady, usagePageSize]);
 
+  useEffect(() => {
+    void loadActivityStats();
+  }, [loadActivityStats]);
+
   useEffect(() => {
     setBotListPage(1);
   }, [search, botListPageSize]);
@@ -254,7 +273,7 @@ export function usePlatformDashboard({ compactMode }: UsePlatformDashboardOption
   const overviewBots = overview?.summary.bots;
   const overviewImages = overview?.summary.images;
   const overviewResources = overview?.summary.resources;
-  const activityStats = overview?.activity_stats;
+  const activityStats = activityStatsData || overview?.activity_stats;
   const usageSummary = usageData?.summary || overview?.usage.summary;
   const usageAnalytics = usageData?.analytics || overview?.usage.analytics || null;
 
@@ -283,10 +302,10 @@ export function usePlatformDashboard({ compactMode }: UsePlatformDashboardOption
   const usageAnalyticsTicks = useMemo(() => buildPlatformUsageAnalyticsTicks(usageAnalyticsMax), [usageAnalyticsMax]);
 
   const refreshAll = useCallback(async () => {
-    const jobs: Promise<unknown>[] = [loadOverview(), loadBots(), loadUsage(usagePage)];
+    const jobs: Promise<unknown>[] = [loadOverview(), loadBots(), loadUsage(usagePage), loadActivityStats()];
     if (selectedBotId) jobs.push(loadSelectedBotUsageSummary(selectedBotId));
     await Promise.allSettled(jobs);
-  }, [loadBots, loadOverview, loadSelectedBotUsageSummary, loadUsage, selectedBotId, usagePage]);
+  }, [loadActivityStats, loadBots, loadOverview, loadSelectedBotUsageSummary, loadUsage, selectedBotId, usagePage]);
 
   const toggleBot = useCallback(async (bot: BotState) => {
     setOperatingBotId(bot.id);
@@ -496,6 +515,7 @@ export function usePlatformDashboard({ compactMode }: UsePlatformDashboardOption
     toggleBot,
     usageAnalytics,
     activityStats,
+    activityLoading,
     usageAnalyticsMax,
     usageAnalyticsSeries,
     usageAnalyticsTicks,