Hepatitis B is usually not contagious when a normal person eats with a person with hepatitis B teratitis B. The transmission of hepatitis B does not include co-eating transmission. Hepatitis B triple positive refers to asymptomatic hepatitis B infected patients, these patients have been infected by the hepatitis B virus, but do not have any clinical symptoms, liver function is usually not abnormal. Hepatitis B virus is mainly transmitted through mother-to-child transmission, blood transmission and sexual transmission, and eating together does not belong to any of the above transmission channels. Therefore, eating together with a person with hepatitis B triple positive is usually not contagious. Special attention should be paid when both the person with hepatitis B triple positive and the person who eats together have bleeding gums and broken oral mucosa, in which case the hepatitis B virus may be transmitted through blood, and the barrier of the human body has been damaged, so we should be careful about being infected with the hepatitis B virus.