Newborns are breastfed for about 10~20 minutes at a time, and feeding on demand is advocated. Newborn breastfeeding on demand, the time of breastfeeding is affected by the amount of breastmilk, the newborn’s age, if the amount of breastmilk is small, it may suck for a long time, most of them are about 10~20 minutes, with the increase of the day, the demand for breastmilk increases, and the amount of breastmilk secretion will also increase. Newborns can sleep quietly for 2~3 hours after breastfeeding, indicating that the amount of breast milk is sufficient. If the newborn has normal weight gain and normal growth and development, it suggests that the amount of milk is normal. If the breastfeeding time is longer, even more than half an hour, the newborn sleeps for a short period of time and often cries, it is necessary to consider that the amount of breastmilk is insufficient, and if necessary, go to the hospital.