diff --git a/ai/models.py b/ai/models.py
index 9a8c505..141be97 100644
--- a/ai/models.py
+++ b/ai/models.py
@@ -158,11 +158,11 @@ class MovieHotInfo(models.Model):
 
 class NewMovieSuggestion(models.Model):
     id = models.AutoField(primary_key=True)
-    cinema = models.CharField(max_length=50)
-    zz_code = models.CharField(max_length=50)
-    movie_zz_code = models.CharField(max_length=50)
-    movie_name = models.CharField(max_length=50)
-    suggestion = models.CharField(max_length=50)
+    cinema = models.CharField(max_length=50, default='')
+    zz_code = models.CharField(max_length=50, default='')
+    movie_zz_code = models.CharField(max_length=50, default='')
+    movie_name = models.CharField(max_length=50, default='')
+    suggestion = models.CharField(max_length=50, default='')
     delete_flag = models.BooleanField(default=False)
 
     def __str__(self):