Sharing dishes with a person with hepatitis B minor tri-positive is not contagious, nor is breathing, shaking hands, hugging and other daily contact. Little three positive refers to three positive hepatitis B surface antigen (HBsAg), hepatitis B e antibody (HBeAb), hepatitis B core antibody (HBcAb), is one of the types of hepatitis B, belongs to a contagious disease. Its main transmission channels are blood transmission, mother-to-child transmission and sexual transmission, and ordinary living contact will not cause infection. If there is a break in the oral mucosa, there is a certain risk of infection, but when the viral load is low, it does not constitute transmissibility and has no practical significance. Therefore, sharing dishes with a patient with hepatitis B minor triplet does not result in transmission. In order to prevent transmission of minor triplets, family members of hepatitis B patients need to be vaccinated against hepatitis B to form hepatitis B surface antibodies and avoid reinfection with the hepatitis B virus.