Hepatitis B is also a sexually transmitted disease, and sexual contact is the most important way of transmission of the hepatitis B virus in western countries such as Europe and the United States. Hepatitis B virus is not transmitted through kissing, hugging, or snacking together, but hepatitis B can be transmitted through sexual contact. If your boyfriend/girlfriend is susceptible (that is, someone who does not have surface antibodies), he/she will be infected with the hepatitis B virus almost all the time within 1 year after marriage, but the chances of developing chronic hepatitis B is extremely low, and the following situations may occur: 1. If you are immunocompromised (such as those who have chronic nephritis, intravenous drug use, have a homosexual fetish, etc.), may become chronic hepatitis B carriers. 2. If the other person is healthy, most of the infected people can clear the virus and produce hepatitis B antibodies: surface antibody (HBsAb, the second of the “two halves”), E antibody (HBeAb, the fourth of the “two halves”) and core antibody (HBcAb). (HBcAb), E antibody (HBeAb “two halves”, 4th) and core antibody (HBcAb “two halves”, 5th) are all positive, or one or two of them are positive, and they are immune to the hepatitis B virus. 3. Acute hepatitis B occurs in individuals among healthy young people and is usually easily cured, but very rarely severe fulminant hepatitis occurs. Therefore, if one of the partners is infected with hepatitis B virus, the following matters should be noted: 1. Be more cautious, and condoms should be used for sexual intercourse before completing the 3 vaccinations. 2, before starting sexual life, you can check the “two half”, if the surface antibody is positive, it shows that there is immunity to hepatitis B virus, and generally will not be infected. 3.If you don’t have surface antibody, you have to take the hepatitis B vaccine first, the first injection today, the second injection after 1 month, the third injection at 6 months, and you have to take 2 injections of the vaccine (10 micrograms) for each injection. 4.If you have not been vaccinated and have started to have sex, you don’t have to be too nervous and worried, because most of the healthy young people can get rid of the virus and get immunity by themselves after infection, and check the “two halves” and liver function in time, and then take corresponding countermeasures according to the results of the examination.