Drinking a small amount of coffee generally has no effect on menstruation. If you have the habit of drinking coffee before, you don't need special taboos during menstruation. You just need to reduce your drinking. If you drink too much, it will mainly affect your rest, because it will excite your nervous system and make it difficult to sleep. Many women will experience fatigue and lethargy during menstruation. Poor sleep will affect women's endocrine, so we must pay attention. In addition to coffee during menstruation, such as carbonated drinks or milk tea, these drinks also contain caffeine, which should be properly controlled. During menstruation, it is best to eat some warm food and some iron-rich food, which is good for your health.