The entry examination now is not to check hepatitis B and two pairs of half, at present the state does not allow the entry examination to check hepatitis B. If the liver function is not normal, it is necessary to further improve the relevant tests to clarify the cause of abnormal liver function. If the liver function is normal, no special examination is needed. Hepatitis B is divided into chronic hepatitis B and hepatitis B carriers. Hepatitis B carriers are those with normal liver function but positive hepatitis B surface antigen, and such people do not need special treatment and can be reviewed regularly. In contrast, patients with chronic hepatitis B have abnormal liver function, with transaminases greater than twice the upper limit of the normal value, and such patients need antiviral treatment.