Hepatitis B half results are negative, generally indicates that the body does not carry the hepatitis B virus. Hepatitis B two half results are negative, for the normal results, indicating that the body does not carry the virus and has not been infected with the hepatitis B virus, but it also indicates that the body does not have immunity to the hepatitis B virus, once the virus invades, the possibility of being infected is higher, it is usually recommended that to the vaccination station to carry out the vaccination of hepatitis B. Hepatitis B is an acute and chronic disease of the liver caused by hepatitis B virus, which can lead to hepatitis, cirrhosis, liver cancer and other diseases. Hepatitis B vaccine is a special medication used for the prevention of hepatitis B, and hepatitis B vaccination is an effective way to prevent hepatitis B virus infection. Hepatitis B vaccine requires 3 shots for the whole process. After vaccination, it can stimulate the body’s immune system to produce protective antibodies, which can play a role in clearing the virus when it invades, thus stopping hepatitis B infection. Hepatitis B vaccination is recommended when both half pairs of hepatitis B are negative.