Infant formula feeding can be based on whether the baby continues to eat the milk, after eating the milk whether crying, spitting and other methods to comprehensively determine whether the feeding is full. 1. Whether the baby continues to eat milk: if the formula-fed babies, if the milk to eat the baby no longer continue to suck, and even tongue out of the nipple, usually is full. 2. Whether to cry after eating milk: After the baby finished eating milk powder, no crying, and quietly fall asleep, it means that it is full. 3. spit up: spit up is one of the performance of the baby is full, the baby’s stomach is not as sound as adults, the capacity of the stomach is very small, the storage of food is also very little, it will be easy to spit up, if the baby has spit up action, that the baby has eaten enough, or even eaten to hold up. The healthy growth of the baby needs the careful care of all mothers, but do not over care, so as not to affect the growth and development of the baby.