Fatty liver and cirrhosis are related. Fatty liver and cirrhosis are twin brothers, hepatitis B and alcohol can cause fatty liver and progress from fatty liver to cirrhosis, so fatty liver and cirrhosis are in sequential order. Not all fatty liver will develop cirrhosis, some fatty liver will develop cirrhosis. From fatty liver to cirrhosis is a developmental process, an irreversible process, in clinical fatty liver or cirrhosis sometimes it is difficult to distinguish from symptoms, from imaging. Whether cirrhosis is contagious or not from the nature of cirrhosis, because the cause of cirrhosis is different, alcoholic problems, autoimmune problems can cause cirrhosis. Cirrhosis can also be caused by hepatitis B. Hepatitis B is an infectious disease, and cirrhosis itself is not contagious, but its viruses, such as hepatitis B cirrhosis and hepatitis C cirrhosis, can be contagious.