Hepatitis B is an infectious disease, which is managed under category B of our statutory infectious diseases. Hepatitis B is mainly transmitted through the blood and body fluid routes. For example, sharing syringes, or sharing medical equipment that has not been strictly sterilized for invasive examinations and treatments, there is a risk of transmitting Hepatitis B. There is also the sharing of personal items, such as toothbrushes, nail clippers, shaving lamps and razors, which can transmit hepatitis B through broken skin. The primary screening for hepatitis B is mainly to check the hepatitis B surface antigen, if the hepatitis B surface antigen is positive, it should be further examined for the hepatitis B virus HBV-DNA.Hepatitis B can be immunized through the vaccination, after the vaccination, if the hepatitis B surface antibody is positive, it has a protective effect on the organism and can prevent the infection of hepatitis B. Patients can apply antiviral medication to prevent the infection of hepatitis B. The vaccine can also be used to prevent the infection of hepatitis B by the body. Patients can apply antiviral drugs to inhibit the replication of hepatitis B virus.