Whether or not there is a recurrence of previous hepatitis B infection depends on whether or not antibodies to the hepatitis B virus have been produced in the body. If there is antibody against hepatitis B virus in the body, the chance of recurrence is very low, if there is no antibody against hepatitis B virus in the body or the antibody is low, then there is still a possibility of recurrence of infection. 1. Hepatitis B virus antibody in the body: after recovering from previous infection with hepatitis B virus, the body may produce corresponding hepatitis B virus antibody, and after coming into contact with hepatitis B virus again, the body’s immune system will be activated, and in general, the body will not be infected with hepatitis B virus again. 2. There is no antibody to hepatitis B virus in the body: if there is no antibody to hepatitis B virus in the body, or the antibody to the virus is low, the surface antibody to hepatitis B is less than 10mIU/mL, there is still a big chance to be infected and the condition will recur after coming into contact with the hepatitis B virus again. After recovering from previous infection with hepatitis B, whether there is antibody of hepatitis B virus in the body, it is recommended to go to the hospital and complete the hepatitis B five tests under the doctor’s advice, if the antibody in the body is low or the body does not produce antibody, then it should be injected in time with the hepatitis B protection vaccine, to avoid recurrence of hepatitis B.