diff --git a/app/api/activities/route.ts b/app/api/activities/route.ts
index fa1c06d..abc07b1 100644
--- a/app/api/activities/route.ts
+++ b/app/api/activities/route.ts
@@ -136,8 +136,8 @@ export async function GET(request: NextRequest) {
         // Determine activity (event_type)
         const activity = eventWithFullPath.event_type || '';
         
-        // Client ID (possibly part of visitor_id)
-        const clientId = eventWithFullPath.visitor_id?.split('-')[0] || 'undefined';
+        // 修改：使用link_label替代visitor_id作为clientId
+        const clientId = eventWithFullPath.link_label || 'undefined';
         
         // Original path - 修正：使用link_original_url作为原始URL来源
         const originPath = eventWithFullPath.link_original_url || 'undefined';