The five hepatitis B tests, namely the hepatitis B virus marker test, including HBsAg, anti-HBs, HBeAg, anti-HBe and anti-HBc, are used to determine the occurrence and progression of hepatitis B. Due to the different testing methods, the corresponding reference values are different, and the clinical results are usually presented as negative: 1. HBsAg: that is, hepatitis B surface antigen, normal is negative. Positive can be seen in acute hepatitis B or chronic hepatitis B, hepatitis B virus carriers can also be positive; 2, anti-HBsAb: that is, hepatitis B surface antibody, normal for positive. Positive indicates that the body has some ability to resist infection to the hepatitis B virus and is a protective antibody. In addition, if injected with hepatitis B vaccine or recently injected with hepatitis B immunoglobulin people are also positive; 3, HBeAg: that is, hepatitis B e antigen, normal negative. Positive is mostly seen in the obvious replication period of hepatitis B, which is highly infectious and can be transmitted to the fetus in case of pregnant women; 4. Anti-HBeAb: that is, hepatitis B e antibody, which needs to be judged in combination with other items. Positive indicates a decrease in hepatitis B virus in the body and a decrease in infectiousness; 5. Anti-HBcAb: Anti-hepatitis B core antigen antibody, which indicates that the body has previously been infected with hepatitis B virus or is being infected with hepatitis B virus. It needs to be combined with other items to determine. Combined with other hepatitis B four tests, the diagnosis of hepatitis B is clearer.