After giving birth to a child, the general period of breastfeeding will last about 3-5 days, but some times there will be individual differences. Generally speaking, on the 2nd day of natural delivery or the 3rd day of cesarean section, physiological swelling is easy to appear, due to the secretion of hormones in the body, which is a normal physiological phenomenon, and will last for about 3-5 days. Breastmilk is the most suitable natural food for babies, not only can it provide babies with the nutrients they need, but also increase the bond between mother and baby, and reduce the incidence of breast, cervical, and ovarian cancer in mothers. During the postpartum period, mothers should be encouraged to breastfeed on demand and pay attention to nighttime breastfeeding in order to ensure a smooth transition through the period of breastfeeding.