Hepatitis B triple positive can be contagious. People with hepatitis B triple positive usually have very active viral replication and high viral load, so it is relatively contagious. Its transmission is mainly through serum, daily close contact and sexual contact, such as blood transfusion, blood products, injections, sharing toothbrushes, razors, etc. The transmission of close life contact and sexual contact may be due to some minor trauma in the process of life, and minor trauma produced by friction in the process of sexual life, which may lead to transmission due to trace blood contact. Another way of transmission is mother-to-child transmission, in which the mother of a person with triple III can transmit the virus to her baby. Therefore, people with Hepatitis B should undergo regular checkups and start treatment at the right time. Healthy people who come into contact with people with Hepatitis B should be vaccinated against Hepatitis B to promote the emergence of antibodies and avoid being infected.