Newborns pure formula feeding, generally 3 hours once, but there are individual differences, at the same time need to monitor the baby’s growth and development. Newborns pure formula feeding, generally 3 hours once, but there are individual differences, some babies may be 2 hours apart, some babies may be appropriate to extend, as long as the baby to eat milk well, normal urination and defecation, sleep and spirit can be, at the same time, need to monitor the baby’s growth and development, to avoid underfeeding, resulting in malnutrition. The first principle of newborn feeding is feeding on demand, which means that meeting the child’s needs comes first. If the child is hungry and shows a strong desire for milk, he needs to be fed as soon as possible, not necessarily in strict accordance with the feeding interval. Overfeeding is also opposed.