Whether liver disease is contagious or not depends on the type of liver disease. Alcoholic hepatitis, fatty liver, and autoimmune liver disease are not contagious, but viral liver disease is contagious, such as hepatitis B and C, which are mainly transmitted through blood, sexual contact, and mother-to-child transmission, while hepatitis A and E are transmitted through fecal-oral transmission. Clinically common is hepatitis B. No matter which state of hepatitis B, it is contagious, and the size of the contagion is determined by viral load DNA. There are also liver diseases caused by non-hepatophilic viruses that are also contagious, such as those caused by EBV, so whether the liver disease is contagious or not is mainly determined by the type of liver disease.