The three bilirubins are total bilirubin, direct bilirubin and indirect bilirubin. If all three are high, it may be related to alcohol consumption, hemolytic jaundice, bile duct stones and other factors. The details are as follows: 1. Alcohol consumption: If you drink a lot of alcohol for a long period of time, it may cause alcoholic hepatitis, which will damage the liver cells and affect the uptake, transformation and excretion of bilirubin, resulting in high bilirubin index in serum. 2. Hemolytic jaundice: a large number of red blood cells are destroyed, and hemoglobin in red blood cells produces a large amount of bilirubin after decomposition, which leads to high bilirubin index. 3. Bile duct stones: Bile duct stones block the bile ducts, which will affect the normal excretion of bilirubin by the liver, resulting in abnormal excretion of bilirubin, which will lead to high bilirubin level. If bilirubin is persistently high and accompanied by other symptoms, it is recommended to consult a doctor for early treatment.