Hepatitis B is not contagious when eating because it is not transmitted through respiratory tract transmission or close contact. The main transmission routes for hepatitis B are through the blood route and vertical transmission from mother to child. If you share syringes with a patient with hepatitis B, or share medical equipment with a patient with hepatitis B, and do not strictly sterilize it for invasive tests and treatments, you are at risk of being infected. There is also a risk of infection through broken skin when sharing personal items, such as toothbrushes, shavers, razors, nail clippers, etc., with a patient with major hepatitis B triple-positive. You can be infected if you enter blood with the hepatitis B virus. If a pregnant woman carries the hepatitis B virus, it can be transmitted to her newborn, so newborns should be treated with mother-to-child blockade and injected with anti-hepatitis B immunoglobulin and hepatitis B vaccine within 24 hours of birth.