Three-month-old babies, if the formula milk a feeding, usually feed 5-6 times a day, every four hours; if breastfeeding, usually 2-3 hours to feed once, on-demand feeding can be. Three-month-old babies, if the formula milk feeding, usually feed 5-6 times a day, every four hours, each feeding amount of 150 to 200 ml, but individual differences; if breastfeeding, usually 2-3 hours to feed once, once 20-30 minutes, on-demand feeding can be. Babies are born to know hunger and fullness, to determine whether the baby ate enough, a look at the interval between the two milk, the second look at the baby’s weight growth, if the baby’s weight growth rate is up to standard, and normal urination and defecation, generally considered normal feeding. The baby is not recommended to lie down immediately after eating milk, appropriate burping to avoid choking.