diff --git a/blog/models.py b/blog/models.py
index 920f0b0..4ad7b8e 100644
--- a/blog/models.py
+++ b/blog/models.py
@@ -69,12 +69,13 @@ class Article(BaseModel):
     )
     title = models.CharField('标题', max_length=200, unique=True)
     body = MDTextField('正文')
-    pub_time = models.DateTimeField('发布时间', blank=True, null=True)
+    pub_time = models.DateTimeField('发布时间', blank=False, null=False, default=now)
     status = models.CharField('文章状态', max_length=1, choices=STATUS_CHOICES, default='p')
     comment_status = models.CharField('评论状态', max_length=1, choices=COMMENT_STATUS, default='o')
     type = models.CharField('类型', max_length=1, choices=TYPE, default='a')
     views = models.PositiveIntegerField('浏览量', default=0)
-    author = models.ForeignKey(settings.AUTH_USER_MODEL, verbose_name='作者', on_delete=models.CASCADE)
+    author = models.ForeignKey(settings.AUTH_USER_MODEL, verbose_name='作者', blank=False, null=False,
+                               on_delete=models.CASCADE)
     article_order = models.IntegerField('排序,数字越大越靠前', blank=False, null=False, default=0)
     category = models.ForeignKey('Category', verbose_name='分类', on_delete=models.CASCADE, blank=False, null=False)
     tags = models.ManyToManyField('Tag', verbose_name='标签集合', blank=True)