Cirrhosis is a disease characterized by structural destruction of liver lobules, proliferation of fibrous connective tissue, and formation of pseudolobules, which is the end result of a variety of factors, and is clinically divided into many types. The common causes and types of cirrhosis are: Hepatitis cirrhosis: developed by chronic hepatitis, the most common in China is the hepatitis B and C virus infection into cirrhosis, because the hepatitis virus is infectious, and extremely difficult to completely remove, so it will continue to cause damage to the liver, and eventually develop into cirrhosis. Patients with this type of cirrhosis are often infectious and have a poor prognosis. Biliary cirrhosis: Because of the obstruction of bile drainage, it accumulates in the liver and over time liver cells undergo necrosis, diffuse fibrosis, pseudobullet formation and liver function loss. It is possible to reverse this type of cirrhosis by removing the cause of the blockage, and it is not infectious. Stasis cirrhosis: Due to the obstruction of blood circulation in the hepatic vein or inferior vena cava, it leads to liver stasis, hepatocyte necrosis and proliferation, which transforms into cirrhosis over time and is not infectious. Cirrhosis caused by alcohol and chemical stimulation: This type usually develops from chronic damage to the liver caused by alcohol or other chemical elements or drugs, etc. It is possible to reverse it after early detection and removal of harmful factors. Cryptogenic cirrhosis: Some patients do not have a clear cause and are not infectious. Therefore, cirrhosis itself is a pathological result and is not contagious, but patients who develop cirrhosis from hepatitis B virus or hepatitis C virus infection need to be aware of the risk of transmission, while other types of cirrhosis do not need to worry about transmission.