The neurological development of the gastrointestinal tract of small babies is still immature, which can easily cause irregular intestinal peristalsis and lead to intestinal spasms, which generally show difficult to soothe crying, mostly seen in the evening or at night, and babies show violent crying, which lasts longer and can reach several hours, and usually the crying stops after the baby is tired of crying or has exhaustion or defecation. There are many reasons for colic, most notably due to the immaturity of the baby’s nervous system and digestive system; the baby swallows a lot of gas during the feeding process, which can cause abdominal distension significantly, leading to abdominal pain; the baby’s digestion of food is very poor, especially for formula babies, because formula milk is mainly milk protein, milk protein molecular weight is relatively large, the child is difficult to digest and absorb, it is more likely to cause The baby is lactose intolerant, whether it is breast milk or milk powder, the lack of lactase will lead to abdominal distension after eating, thus triggering the occurrence of colic. These factors are the causes of colic, and only after the triggering factors are identified and eliminated will the child be free from the pain of colic in the true sense.