diff --git a/apps/mosquito/models.py b/apps/mosquito/models.py
index 9b79fa4..2c85ecb 100644
--- a/apps/mosquito/models.py
+++ b/apps/mosquito/models.py
@@ -44,8 +44,9 @@ class MosqPost(models.Model):
 
 
 class MosqPostStatistic(models.Model):
-    increment = models.PositiveIntegerField(verbose_name='增量')
-    date = models.DateField(auto_now_add=True, verbose_name='日期')
+    total = models.PositiveIntegerField(verbose_name='总数')
+    increment = models.IntegerField(verbose_name='增量')
+    date = models.DateField(auto_now_add=True, verbose_name='日期', unique=True)
 
     class Meta:
         verbose_name = '统计报表'