diff --git a/services/ans/src/advanced_notification_service.cpp b/services/ans/src/advanced_notification_service.cpp
index 276e0ebbcae89948ff81ee12db7088b683df2569..8cbe3f0dad3ea686a229fbe2b27ed63519a54c88 100644
--- a/services/ans/src/advanced_notification_service.cpp
+++ b/services/ans/src/advanced_notification_service.cpp
@@ -907,6 +907,7 @@ ErrCode AdvancedNotificationService::UpdateInNotificationList(const std::shared_
 {
     std::chrono::system_clock::time_point now = std::chrono::system_clock::now();
     NotificationAnalyticsUtil::RemoveExpired(flowControlUpdateTimestampList_, now);
+    printf("size: %d\n", static_cast<int32_t>(flowControlUpdateTimestampList_.size()));
     if (flowControlUpdateTimestampList_.size() >= MAX_UPDATE_NUM_PERSECOND) {
         return ERR_ANS_OVER_MAX_UPDATE_PERSECOND;
     }