Hepatitis B five tests surface antigen (HBsAg) whether there is hepatitis B virus in the body surface antibody (anti-HBs) whether there is protection е antigen (HBeAg) whether the virus replicates and is infectious е antibody (anti-HBe) whether the virus replication is inhibited core antibody (anti-HBc) whether the hepatitis B virus has been infected focus on the e antigen its appearance indicates the presence of the virus in the body, if the titer is high indicates that the virus content is relatively high, the infectiousness will be greatly enhanced, on the contrary, the e antigen weakens or disappears indicates that the virus replication in the body is gradually weakened, the body is in recovery.