When breastfeeding, if a woman has more or less milk sometimes, it is usually related to the following factors. A woman will have more milk in the following states: the baby is sucking well, the pregnant woman is resting well, her nutrition is good, she is sleeping well, and she is in a happy mood, in this state the milk secretion function is very good, as long as the baby sucks frequently, the milk is very sufficient in most cases. The first reason is that the baby is separated from the mother after birth for some reasons, which prevents her from sucking effectively. The second reason is that the mother is not in good health, such as severe postpartum bleeding, high blood pressure during pregnancy, or serious obstetric complications such as diabetes, which can affect lactation. The third, if the rest inside the month is not good, emotional instability, will also affect the milk.