q = models.UserInfo.objects.all() select * from userinfo select * from userinfo inner join usertype on ... for row in q: print(row.name,row.ut.title) select_related: 查询主动做连表 q = models.UserInfo.objects.all().select_related('ut','gp') select * from userinfo select * from userinfo inner join usertype on ... for row in q: print(row.name,row.ut.title) prefetch_related: 不做连表,做多次查询 q = models.UserInfo.objects.all().prefetch_related('ut') select * from userinfo; Django内部:ut_id = [2,4] select * from usertype where id in [2,4] for row in q: print(row.id,row.ut.title)