The common causes of liver cirrhosis include viral infection, alcohol damage, immune system diseases and so on. 1. Viral infection: the most common is hepatitis B virus infection, long-term chronic hepatitis B virus infection will cause continuous damage to liver cells, if not effectively treated, it may gradually evolve into cirrhosis. 2. Alcohol damage: liver is the main metabolizing organ of alcohol, frequent alcoholics are prone to alcoholic fatty liver disease and alcoholic cirrhosis. 3. Immune system disease: autoimmune hepatitis is the most common, the immune system due to pathological factors will be normal liver cells into the attack range leading to liver injury and gradually evolve into cirrhosis. Cirrhosis may also have other causes, drugs, non-alcoholic fatty liver disease, cardiogenic cirrhosis, schistosomal cirrhosis, genetic metabolic factors such as hepatomegaly. It is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.