In newborn infants, a transient jaundice, usually called physiological jaundice, may occur because the liver is weak in its ability to convert and metabolize bilirubin, i.e., the liver is not well developed. Physiologic jaundice is usually low in level and short in duration, and usually requires no special treatment and usually subsides in 2 weeks. If the jaundice lasts for a longer period of time and the level is higher, it is called pathological jaundice. For pathological jaundice, you need to go to the neonatology department of a regular hospital, and you can take oral medication. If the treatment is not satisfactory, blue light irradiation treatment is needed. Blue light irradiation can promote the conversion of bilirubin excretion, which is a better way to eliminate jaundice. After these treatments, if the jaundice still does not subside, pay attention to the exclusion of specific congenital diseases, such as congenital abnormal bile duct development, which can be clarified by ultrasound and other examinations, and if necessary, to exclude the presence of acute viral hepatitis caused by viral infections, and treat according to different causes.