There are many reasons for high bilirubin in adults, such as physiological factors, liver injury, biliary obstruction, etc. Symptomatic treatment should be based on the specific causes. 1. Physiological factors: If the blood is diluted due to low water intake, or if high cholesterol food is consumed, bilirubin can be transiently elevated. Usually, no treatment is needed, and it can be recovered by taking rest and improving diet. 2. Liver injury: In diseases such as hepatitis, fatty liver, cirrhosis, etc., total bilirubin, direct bilirubin and indirect bilirubin can be increased to different degrees. In this case, it is necessary to pay attention to rest, adjust the lifestyle habits, and with the treatment of liver-protecting drugs, such as hepatoprotection, etc. In addition, ursodeoxycholic acid capsule can be used to promote the excretion of bilirubin. 3. Biliary obstruction: If the obstructive jaundice caused by bile duct stones is common, the bilirubin elevation is dominated by direct bilirubin, and abdominal pain, chills, high fever, jaundice and other symptoms may appear. Asymptomatic patients can be treated with general symptomatic treatment, improvement of lifestyle and appropriate exercise; severe symptoms usually require surgical treatment. In conclusion, adults with high bilirubin should go to the hospital in time for a clear diagnosis and treatment under the guidance of a doctor.