The normal value of jaundice in children should be between 5mg/dL-7mg/dL. Jaundice is mainly due to the concentration of bilirubin in the blood exceeding the normal value, which is manifested by the yellow coloration of the skin visible to the naked eye. Among them, jaundice mainly occurs in younger infants and children, especially in newborns. Jaundice is generally subdivided into physiologic jaundice and pathologic jaundice. Physiological jaundice mainly refers to the child’s jaundice began to appear 2-3 days after birth, 4-5 days began to reach the peak, 5-7 days began to subside, and generally will not exceed two weeks. So if there is still jaundice after two weeks, it belongs to pathological jaundice. The most common cause of pathologic jaundice is intrauterine infections in the mother’s pregnancy, mostly viral infections, such as cytomegalovirus, EBV, toxoplasmosis, and so on. Then there is hemolytic disease. Jaundice caused by hemolytic disease in newborns is very serious, and is usually caused by ABO hemolysis or RH hemolysis. Jaundice caused by hemolysis can be severe enough to cause bilirubin encephalopathy, also known as kernel jaundice. Infections, such as sepsis, can also cause jaundice to increase in newborns. Another common form of jaundice is breast milk jaundice. Breast milk jaundice is caused mainly by the child’s breast milk. The jaundice subsides quickly after the child stops breastfeeding, and then reappears when the child is breastfed again. This is usually a mild form of jaundice that does not require special treatment or stopping breastfeeding.