Men who get hepatitis B may have the following ways of transmission: 1. mother-to-child transmission, that is, the mother herself is a hepatitis B carrier, during pregnancy to transmit the hepatitis B virus to the child; 2. sexual transmission, it is possible that the wife is a hepatitis B carrier, through sexual life to transmit the hepatitis B virus to the husband; 3. unclean injections, tooth extraction, etc., some places are not very good sanitation, there may be no way to take Disposable needles, syringes, tooth extraction tools, etc., through unclean injection methods and treatment may spread hepatitis B virus; 4, homosexuality, drug addiction patients also have a relatively high probability of hepatitis B infection; 5, blood transfusion transmission, blood contains hepatitis B virus through blood transfusion caused by hepatitis B infection.