diff --git a/apps/mosquito/mqtt_task.py b/apps/mosquito/mqtt_task.py
index 3bef639..ae7fefb 100644
--- a/apps/mosquito/mqtt_task.py
+++ b/apps/mosquito/mqtt_task.py
@@ -5,7 +5,7 @@ import django
 from typing import Dict
 from pathlib import Path
 from enum import Enum
-from datetime import datetime
+from datetime import datetime, timedelta
 import paho.mqtt.client as mqtt
 
 
@@ -123,22 +123,27 @@ def create_mosq_post(device_id: str, post_data: Dict):
 
 
 def update_mosq_device_statistic(device_id: str, post_data: Dict):
+    device = DeviceInfo.objects.filter(device_id=device_id).first()
     datetime_format = "%Y-%m-%d %H:%M:%S"
     cur_date = datetime.strptime(post_data['time'], datetime_format).date()
-    old_record = DevicePostStatistic.objects.filter(device_id=device_id, date=cur_date).first()
-    org = Org.objects.get(id=1)
-    incr = 0
-    cur_total = post_data['count']
-    if old_record:
-        device = DeviceInfo.objects.filter(device_id=device_id).first()
-        if device:
-            org = device.org
-        incr = cur_total - old_record.total
-    DevicePostStatistic.objects.create(device_id=device_id,
-                                       date=cur_date,
-                                       total=cur_total,
-                                       increment=incr,
-                                       org=org)
+    cur_record = DevicePostStatistic.objects.filter(device_id=device_id, date=cur_date).first()
+    last_record = DevicePostStatistic.objects.filter(device_id=device_id, date=cur_date - timedelta(days=1)).first()
+    if last_record and cur_record:
+        incr = cur_record.total - last_record.total
+    else:
+        incr = 0
+
+    mqtt_total = post_data['count']
+    if cur_record:
+        cur_record.total = mqtt_total
+        cur_record.increment = incr
+        cur_record.save()
+    else:
+        DevicePostStatistic.objects.create(device_id=device_id,
+                                           date=cur_date,
+                                           total=mqtt_total,
+                                           increment=incr,
+                                           org=device.org)
 
 
 def to_string(post_data: Dict, power_type: PowerType) -> str: