diff --git a/mosqkiller/settings.py b/mosqkiller/settings.py
index 57df1c2..a47e60b 100644
--- a/mosqkiller/settings.py
+++ b/mosqkiller/settings.py
@@ -209,7 +209,7 @@ CELERY_TIMEZONE = 'Asia/Shanghai'
 CELERY_BEAT_SCHEDULE = {
     'update-daily-statistic': {
         'task': 'mosquito.tasks.update_daily_statistic',
-        'schedule': crontab(hour='*/1'),
+        'schedule': crontab(hour='*/1', minute=0),
     },
     # 'update-latest-statistic': {
     #     'task': 'mosquito.tasks.update_latest_statistic',