The frequency, interval and amount of breastfeeding for newborn babies vary greatly among individuals, and should be determined according to the specific conditions of the babies, and it is generally recommended that breastfeeding on demand is sufficient. Most newborn babies can drink 70~100ml of milk at one time. In general, newborns breastfeed about 7 to 8 times a day and night, day and night breastfeeding intervals are similar, about 3 hours once, the latter half of the night a little longer. Each breastfeeding is about 70~100ml; it is generally recommended to feed on demand, the amount of milk is variable, and the amount of milk for each feeding is different at different intervals. After 2 weeks, about 6 to 7 times a day, 100 to 120 ml each time, 2 to 3 months 6 times a day, 120 to 150 ml each breastfeeding, the interval is delayed to 3.5 to 4 hours, and the second half of the night can sleep for 5 to 6 hours. To determine whether the amount of milk is sufficient, the infant’s weight gain, urine output and sleep conditions should be considered together. It is necessary to monitor the child’s growth and development to determine the adequacy of milk supply.