Cholestasis, also known as cholestasis, is caused by obstruction of bile flow or excretion, and the cause is divided into intrahepatic and extrahepatic stasis. Intrahepatic stasis can be caused by cirrhosis, tumors, and viral liver diseases. Extrahepatic stasis can be categorized as biliary stasis, stones, obstruction, congenital malformations of the biliary tract, gestational cholestasis, or stasis caused by food poisoning or trauma. The treatment of intrahepatic cholestasis mainly focuses on the cause of the disease, for example, if it is caused by liver disease, antiviral or immune modulation and anti-inflammatory should be carried out. If it is caused by extrahepatic cholestasis, stone removal is performed. If it is caused by tumor, surgical treatment may be needed. Traditional Chinese medicine is still mainly from the identification of the type of treatment, such as the most common viral liver disease, can also be carried out to protect the liver, lower the enzyme, choleretic, clearing dampness and heat of the therapeutic principles. Elevated bile acids and elevated bilirubin in pregnancy can also be treated with a formula that clears dampness and heat.