For babies, breast milk is undoubtedly the most nutritious food; the importance of breastfeeding is also self-evident, not only can bring nutritional satisfaction to the child, the contact of feeding will also bring psychological comfort to the baby, and is also beneficial to the mother’s postnatal recovery. Many parents worry that the mother does not produce enough milk, the child does not eat enough, but also for the sake of convenience, over-reliance on formula, in fact, this approach is not scientific. In fact, as long as the infant’s sucking as much as possible, so that the milk is emptied in time, it will be good to stimulate the next wave of breast milk secretion. Infant feeding should be about feeding on demand. We all know that the amount of breast milk produced each time is not fixed, so there is absolutely no need for parents to feed regularly for 2 or a few hours, especially when joining a baby who is still sleeping, and there is no need to wake up to breastfeed. In fact, the rhythm of the mother and baby can be adjusted and there is no need to overemphasize regular feedings. In fact, compared to artificial feeding (using formula), breastfed children are less likely to suffer from certain diseases later on. Dr. Shen Zhenyu, deputy director of the Department of Pediatrics of Zhongshan First Hospital, pointed out that breast milk contains more immune factors, which helps to enhance the child’s immunity and reduce the chance of future illnesses; relatively speaking, infants fed formula have a higher chance of contracting infectious diseases, allergic diseases, abdominal pain, indigestion, enteritis, etc., which will have a certain impact on the child’s growth and development. In addition, premature infants should be breastfed more, and it is recommended to add breast milk additives to strengthen some components of breast milk, this practice has more benefits for infants than using formula for premature babies. He pointed out that breastfeeding + breast milk additive is recommended for preterm infants at a younger gestational age; especially the younger the gestational age and the lower the birth weight of the preterm infant, the more importance should be given to it because it involves issues such as catching up of the infant’s weight after birth. Usually, normal infants start adding complementary foods 4-6 months after birth; preterm infants should be delayed appropriately according to birth gestational age, baby’s weight gain and feeding situation.