Newborns should be exposed to and suckled for breast milk as early as 30 minutes after birth. To promote successful breastfeeding, suckle breast milk at least 8 to 10 times a day from the 1st day of life for more than 30 minutes each time. This will ensure that the child is able to eat the milk. During the 28 days from birth to full term, the amount of milk for newborns is not constant, but gradually increases. On the first day of life, the capacity of the newborn’s stomach is only 5~7ml, so as long as the number of sucking breast milk reaches 8~10 times a day, it can meet the child’s needs. This means that the newborn’s stomach volume reaches 43-57 ml, so that the amount of milk consumed at each meal reaches more than 50 ml. Breastfed newborns follow the principle of breastfeeding on demand. As long as the baby is hungry or the mother feels that her breasts are swollen, she can bring the baby over and let the baby eat breast milk, and as long as the number of urination is more than 6~8 times a day, it means that the child is full of milk and the amount of milk is sufficient, and this kind of general we do not know how much milk the baby has eaten each time. Only for newborns who are on formula milk, we can know the exact amount of milk each time. According to the situation of the newborn’s stomach capacity, after birth, if you are not able to breastfeed, then the amount of formula should be 10 to 30ml each time, and generally by four or five days can reach 50 to 60ml, to almost full moon, some children can reach about 100ml, this is only an approximate range, each child’s weight is different, the specific amount of milk or individual differences. In short, there are individual differences in the amount of milk a newborn baby eats, and it is related to the age of the newborn. As the child grows older, the amount of milk consumed will increase every few days.