The feeding methods of newborn babies are divided into breastfeeding, formula feeding and mixed feeding, etc. Generally, newborn babies are fed once every 2-3 hours during the day, and it may be prolonged at night. 1. Breastfeeding: If the newborn baby is in a healthy state, generally 2-3 hours of feeding once can meet the nutritional needs of newborn babies. At night is the newborn baby’s deep sleep time, the feeding time can be appropriately extended, usually in the night 3~4 hours to feed once. 2. formula feeding: formula-fed newborns are usually fed once every 2-3 hours during the day, and once every 3-4 hours at night. 3. Mixed feeding: Some newborn babies may be breastfed and formula fed, which belongs to mixed feeding, and are generally fed once every 2~3 hours during the day and once every 3~4 hours at night. As each newborn baby’s physical condition will be different, the amount of food will also be different, parents can figure out the feeding routine for their own babies, as long as to maintain a regular breastfeeding can be.