Exclusive breastfeeding for newborns, breastfeeding on demand; artificial feeding, you need to follow the instructions of the formula; mixed feeding, you need to judge according to the baby’s performance, weight gain. 1. Exclusive breastfeeding, the amount of breast milk increases gradually with the baby’s age, generally newborns breastfeeding about 7 to 8 times a day and night, day and night breastfeeding intervals are similar, about once every 3 hours, the latter half of the night a little longer. Each breastfeeding is about 70 to 100ml; it is generally recommended to feed on demand, the amount of milk is not fixed, and the interval is different, the amount of milk in each feeding is also different. 2. Artificial feeding, pay attention to the correct preparation according to the instructions of the formula milk, generally newborns need about 100 to 120kcal/kg of energy per day, which is equivalent to about 150 to 180ml/(kg-d) of milk. 3. Mixed feeding, need to be based on the baby’s performance, such as breastfeeding after the use of formula to make up for, or the baby’s weight gain is not satisfied with the awareness of the increase in formula, follow the principle of the lack of how much to make up for the principle of how much. The amount of breastfeeding for newborn infants needs to be judged according to the specific situation, if necessary, go to the hospital and seek medical help.