For the clinical presence of increased bilirubin three, while other liver function indexes are normal, first of all, we need to understand whether alcoholism, chronic viral hepatitis infection, fatty liver, liver disease, as well as hepatobiliary stones and tumors exist. The user’s medical history, previous liver function test reports, complete hepatitis complete set, hepatobiliary ultrasound and other examinations should be pursued in detail, and liver disease antibodies and MRI+MRCP should be done if necessary. Generally speaking, if there is no history of alcohol consumption, obvious liver damage, hepatitis, liver disease, etc., and the bilirubin is mildly fluctuating and elevated for a long time, the jaundice is considered to be somatic hepatic dysfunction (Gilbert syndrome), which generally does not require treatment, mainly avoiding bad habits of life, diet and disease, and dynamic follow-up observation. If necessary, a glucuronosyltransferase inducer, phenobarbital, should be given orally to help reduce the bilirubin level.