Major triple-positive is a patient who is positive for hepatitis B surface antigen, hepatitis B core antibody and hepatitis B e antigen in all three of the five tests for hepatitis B. They may be carriers of the hepatitis B virus or have hepatitis B. Patients with major triple yang are able to transmit the hepatitis B virus, so there is a risk of transmission to family members, but there are preventive ways to reduce the risk of transmission so that they can share meals with their families. The sweat and saliva of a person with major triple-positive disease contains a small amount of hepatitis B virus, and the probability of transmission of hepatitis B virus through the digestive and respiratory systems is low, so it is generally not contagious to family members and can be shared with them. However, if a family member has an open wound such as a mouth ulcer or a broken oral mucosa, it may increase the probability of hepatitis B virus infection, so you should avoid eating together with a patient with major triplets. Patients with Hepatitis B can also use exclusive tableware, sterilize tableware after each use, or share meals with family members to improve safety. In addition, the hepatitis B virus is commonly transmitted from mother to child, blood to blood, and sex to family members. If the mother is a major triple-positive patient, she may transmit the virus to her infant during pregnancy, delivery or breastfeeding. If one of the spouses is a major triple-positive patient, they should avoid traumatic injuries such as mouth ulcers when kissing to prevent the hepatitis B virus from being transmitted through wounds. Couples should take precautions when having sex and use condoms, etc. Family members can perform the five hepatitis B tests to observe whether there are surface antibodies to the hepatitis B virus in the body. If the titer of hepatitis B surface virus antibodies is low or if the hepatitis B surface virus antibodies are negative, the hepatitis B vaccine can be given to the body to produce hepatitis B specific antibodies, thus enhancing immunity and reducing the probability of virus infection.