The normal metabolism of breast tissue depends on the binding of hormones secreted by the endocrine system and the corresponding receptors distributed on the breast tissue. After the binding of hormones and receptors, the epithelium of the milk ducts and the cells of the breast tissue are able to exert their effects normally. During pregnancy, both estrogen and prolactin in the mother’s blood increase with gestation, but estrogen prevails and competes for the receptors on the mammary tissue, so the mammary tissue develops and enlarges, while estrogen declines rapidly after delivery, and prolactin prevails, when prolactin binds to the prolactin receptors on the mammary tissues, and lactation occurs. At the beginning of the postpartum period, estrogen has not completely receded, and the combination of lactin and lactin receptors on the breast tissue has not yet reached harmony, so milk rises occur. If the mother is eager to breastfeed and the hormone levels in the body are not yet harmonized, severe milk rises will occur, and the use of suction and nudging will have little effect. Folk have umbilical cord blood and maternal fusion method, with some scientific reasoning, that is, immediately after the birth of the child, suction umbilical cord blood 10 milliliters, washed into warm water mother to drink, this may achieve the role of hormone inhibition of estrogen in the umbilical cord blood in the mother’s body, so that lactin and lactogen receptor more easily combined, clinically verified to have a positive effect.