High jaundice in children can cause vomiting, especially in children with pathological jaundice, and abnormally high bilirubin levels in the body often cause bilirubin encephalopathy, which often results in vomiting and a poor mental state, with some children screaming and being drowsy, which can cause brain damage in children. Therefore, if a child has very high jaundice, intervention should be given in a timely manner, for example, by applying blue light or even blood exchange therapy. If a child’s jaundice is elevated due to biliary atresia, surgical intervention should be performed, so that children with high jaundice may spit up milk.