Postpartum nipple overflow refers to the phenomenon that maternal milk flows out naturally during the breastfeeding period without the baby sucking. Postpartum nipple overflow can be clinically divided into physiological and pathological: 1. physiological: this is related to the mother’s abundant milk, not timely breastfeeding, and the early weaning period is not completely back to milk, this is a normal phenomenon, no treatment is needed; 2. pathological: refers to the milk will be from the bilateral nipples or one side of the nipple drip flow, the amount of milk is small, and is not enough to meet the feeding baby, should promptly go to the hospital for The diagnosis and treatment should be done in time.