Serum bilirubin, an indicator of liver function testing, has a normal value of 20 μmol/L or less. Obstruction, viruses, hepatocellular damage, and physiological factors can cause bilirubin to rise. Bilirubin is further divided into direct bilirubin, total bilirubin and indirect bilirubin. The type of jaundice is determined according to its ratio relationship. If bilirubin is significantly elevated, it indicates liver damage. Under the guidance of a doctor, bilirubin is lowered through comprehensive liver care treatment. In case of mild elevation, the decision to treat or not is made at the doctor’s discretion.