Babies up to 7 days after birth need to be treated at the discretion of a specialized neonatologist. For babies born after 7 days, do not exceed 15mg/dl for term babies and 12.9mg/dl for preterm babies, please refer to Bhutani curve. Jaundice is common in newborns, most of them are physiologic jaundice, and only a few are pathologic jaundice. Generally speaking, it is relatively safe for the bilirubin level of full-term babies not to exceed 12.9mg/dl. If the bilirubin level of full-term infants exceeds 15mg/dl, it is necessary to consider active treatment to reduce the yellowing, and at the same time need to pay attention to monitoring the value of jaundice, to avoid high jaundice value and cause bilirubin encephalopathy. Excessive jaundice in newborns may lead to bilirubin encephalopathy, which can easily affect the development of the brain and leave sequelae. Especially if the jaundice value exceeds 15mg/dl, blue light treatment should be considered. Bilirubin levels should be monitored regularly and referred to a specialized neonatologist.