If a small amount of alcohol is consumed basically will not affect the postponement of menstruation, but if a large amount of alcohol is consumed, such as more than half a kilo of white wine or more than five bottles of beer, in this case because the alcohol content is more, the effect of alcohol will cause endocrine disruption in women, which will lead to the postponement of menstruation. Therefore, it is better for women not to drink too much alcohol near the time of menstruation, so as not to cause delayed menstruation. There are other causes of delayed menstruation, such as pregnancy, fire, poor sleep or rest, etc., which can lead to delayed menstruation. If necessary, you can also check the gynecological ultrasound to exclude organic lesions, such as uterine fibroids, ovarian cysts or excessive hyperplasia of the endometrium, etc.