The baby’s bowel movements change from 2-6 times a day to once every 2-3 days, or even once every few days. During this period, the baby eats, sleeps normally, no obvious crying, weight gain is also normal, and the stool form is also normal thin paste; while constipation mainly refers to the stool is dry and hard, at the same time the baby will also be accompanied by sleep disturbance, crying during defecation, irritability and other symptoms. Babies must be clearly distinguished from constipation, save belly is a normal stage of growth and development of the baby, constipation will bring great pain to the baby, must be distinguished to be able to use different treatment methods.