A normal hepatitis B virus DNA quantification is preferable, indicating that the body is not contagious if the hepatitis B virus is not replicating. Hepatitis B virus DNA quantitatively normal is generally common in three situations: 1. The human body has not been infected with hepatitis B virus, the quantitative amount of hepatitis B virus DNA in the serum is normal. 2. The human body has been infected with hepatitis B virus, and hepatitis B surface antigen is positive, belonging to hepatitis B carriers, but hepatitis B virus DNA quantitatively normal, the virus is not active replication, low infectiousness. 3. The human body has been infected with hepatitis B virus, and after antiviral treatment, the quantitative amount of hepatitis B virus DNA has been reduced to normal, but in the later stage, it is still necessary to regularly review the tests of hepatitis B two-half pairs, the quantitative amount of hepatitis B virus DNA, liver function and other tests. Therefore, it is better to have normal hepatitis B virus DNA quantification.