Autoimmune liver is short for autoimmune hepatitis, which is mainly divided into three types, and the severity is not necessarily determined by the type. Autoimmune liver is a chronic inflammation of the liver of unknown etiology, and is mainly divided into type 1, type 2 and type 3. type 1 is the most common, and has a better effect on immunosuppressant treatment; type 2 has a more rapid progression of the disease, with a high rate of recurrence, and has a poor effect on the treatment of glucocorticosteroids; and type 3 has a similar effect on the treatment of hormone therapy to that of type 1. The degree of severity of self-immune liver should be considered from various aspects such as symptoms, severity of hepatitis, and response to drug therapy. Asymptomatic patients have a better prognosis, and a small number of patients may experience spontaneous remission. Patients who present with severe hepatitis in the initial stages of the disease often have difficulty controlling the disease in the long term. Patients who are insensitive to medication or who relapse after treatment suggest more severe disease. Regardless of the type of self-immune liver, it should be detected and treated early under the guidance of a medical professional in order to achieve a better outcome.