The jaundice value of 15.2mg/dl measured in 20 days old baby can be seen in breast milk jaundice, neonatal infection or neonatal hepatitis, etc. Intervention needs to be carried out according to the cause, such as breast milk jaundice can be treated by stopping breast milk for 24~48 hours and so on as appropriate. 1.Breast milk jaundice: it refers to breastfed newborns who still have jaundice within 1~3 months after birth, manifested as non-hemolytic hyper unconjugated bilirubinemia, and its diagnosis is exclusionary. Generally no special treatment is needed. Jaundice can be significantly reduced by stopping breastfeeding for 24~48 hours, but it is usually possible not to stop breastfeeding; intervention should be made when bilirubin level reaches the standard of phototherapy. 2. Neonatal infections: such as sepsis, the above jaundice values can occur, the treatment needs to identify the focal point of infection, timely use of antibiotics (such as penicillin, cefotaxime, meropenem, etc.) anti-infection treatment, intravenous injection of immunoglobulin, if necessary. 3. Neonatal Hepatitis: Jaundice can occur in hepatitis B virus, cytomegalovirus, EB virus and other infections caused by the hepatocyte excretion of bilirubin, some of which can be accompanied by liver function abnormalities. Light therapy, drug therapy (such as ganciclovir, phenobarbital, intravenous immunoglobulin, etc.), blood exchange therapy, etc., are mostly used for treatment. 4. Others: If congenital biliary atresia is present, the above conditions can occur, often accompanied by clay-like stools, perfect abdominal ultrasound can assist in the diagnosis, and need to actively consult the doctor for surgical treatment. All of the above drugs should be used under the guidance of a physician, avoid self-medication. 20 days old baby jaundice 15.2mg/dl there are many other possible causes, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease to give targeted treatment or treatment.