diff --git a/apps/mosquito/migrations/0029_auto_20240325_1933.py b/apps/mosquito/migrations/0029_auto_20240325_1933.py
new file mode 100644
index 0000000..63ef754
--- /dev/null
+++ b/apps/mosquito/migrations/0029_auto_20240325_1933.py
@@ -0,0 +1,22 @@
+# Generated by Django 2.2.4 on 2024-03-25 11:33
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mosquito', '0028_deviceinfo_count'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='mosqpost',
+            name='device_id',
+            field=models.CharField(db_index=True, max_length=100, verbose_name='设备ID'),
+        ),
+        migrations.AlterUniqueTogether(
+            name='mosqpost',
+            unique_together={('device_id', 'create_time')},
+        ),
+    ]
diff --git a/apps/mosquito/models.py b/apps/mosquito/models.py
index 1eca454..4ed6850 100644
--- a/apps/mosquito/models.py
+++ b/apps/mosquito/models.py
@@ -3,7 +3,7 @@ from smart.models import SmartModule, SmartPush
 
 
 class MosqPost(models.Model):
-    device_id = models.CharField(max_length=100, verbose_name='设备ID')
+    device_id = models.CharField(db_index=True, max_length=100, verbose_name='设备ID')
     count = models.PositiveIntegerField(verbose_name="灭蚊数量")
     load = models.CharField(max_length=100, blank=True, null=True, verbose_name='负载电压电流功率')
     storage_battery = models.CharField(max_length=100, blank=True, null=True, verbose_name='电池电压电流功率')
@@ -14,6 +14,9 @@ class MosqPost(models.Model):
     update_time = models.DateTimeField(auto_now=True, blank=True, null=True, verbose_name='更新时间')
 
     class Meta:
+        unique_together = (
+            ('device_id', 'create_time'),
+        )
         verbose_name = '灭蚊灯数据'
         verbose_name_plural = verbose_name