In viral hepatitis, hepatitis B is a common and frequent viral hepatitis. Hepatitis B is transmitted mainly through the following ways: 1. transmission of body fluids: such as blood, semen, sweat, mainly blood transmission, if contact with the blood of an infected person, it happens that I have a small wound, at this time, easy to be infected, hepatitis B virus is generally not transmitted through the digestive tract; 2. vertical transmission from mother to child: the most important transmission route in China, that is, the mother carries the hepatitis B virus, which can be transmitted vertically to the little baby, especially in the last In the 1990s, now because of mother-to-child interruption, mother-to-child vertical transmission is becoming less and less.