Women’s milk after childbirth is a normal physiological phenomenon, the reasons are as follows: First, due to the increase in lactogen secretion after childbirth will increase the production of milk, if the number of infants nursing or milk demand is small and can not be excreted in a timely manner will increase milk. Second, due to the good rest of women after childbirth, and the consumption of highly nutritious food, such as meat, soup food more will also promote the secretion of milk. When a woman has a milk rise after giving birth, she can let her baby suckle first, and if necessary, she can use a breast pump to excrete too much milk to promote the secretion of milk. If the breasts are very high and not sucked empty in time it can easily lead to fever, local pain and other cases of mastitis, which can also lead to back milk.