How to feed a newborn baby on the first day needs to be based on the situation of the mother and baby, such as the mother and baby no special circumstances, it is recommended that the baby suck as early as possible to open the milk, on-demand feeding, insufficient breast milk can be added to the appropriate formula milk and so on. For the newborn baby feeding needs to be based on the mother and the baby’s own physical condition, reasonable feeding is particularly important for the growth and development of the baby, such as feeding is not timely may appear newborn hypoglycemia, such as irrational feeding, gastrointestinal dysfunction may occur, severe neonatal necrotizing small bowel colitis, and so on. For mothers and babies without special circumstances, it is recommended to suckle as early as possible to open the milk, can be advanced to 1 ~ 2 hours after birth, the baby suckles the mother’s nipple, which will help the mother’s milk secretion, for the first day of the mother’s breast milk is insufficient, can be added to the formula milk, it is recommended to feed on demand. If the baby is preterm, or has a history of hypoxia, feeding on the first day of labor needs to be evaluated by a specialist, and if necessary, fasting and intravenous nutritional interventions are needed. It is advisable to consult a specialist who can advise on feeding according to the baby’s specific condition.