Coffee has the effect of returning milk, so it is not recommended to drink coffee in the case of breastfeeding, because it will lead to a decrease in the secretion of milk, which will have a certain impact on the baby’s breastfeeding. In addition, it is not recommended to drink coffee while breastfeeding, mainly because if you drink coffee, coffee contains caffeine, then the caffeine will be secreted through the milk, so that it will be sucked by the baby, so that the baby will not sleep, crying and other corresponding symptoms. In addition, if you are drinking coffee while breastfeeding will also lead to a state of excitement, so it is easy to aggravate fatigue, because the sleep itself is not good when breastfeeding, so it is recommended not to drink coffee during breastfeeding. In addition, there are some milk-reducing foods, such as leeks, hawthorn, malt, etc. can have the effect of returning milk, so do not eat these foods when breastfeeding.