diff --git a/apps/mosquito/models.py b/apps/mosquito/models.py
index 2c85ecb..0898d83 100644
--- a/apps/mosquito/models.py
+++ b/apps/mosquito/models.py
@@ -46,7 +46,7 @@ class MosqPost(models.Model):
 class MosqPostStatistic(models.Model):
     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)
+    date = models.DateField(auto_now_add=False, verbose_name='日期', unique=True)
 
     class Meta:
         verbose_name = '统计报表'