Hepatitis B two halves is normal, it does not mean that the liver function is normal, it is still necessary to carry out liver function tests. Hepatitis B two halves contains hepatitis B surface antigen, hepatitis B surface antibody, hepatitis B e antigen, hepatitis B e antibody and hepatitis B core antibody, which are mainly used to determine whether the hepatitis B virus is infected or not, to assess the situation of infection, and whether the antibody is produced after hepatitis B vaccination, etc. The liver function test is to detect various indicators related to liver function and metabolism through various biochemical tests. Liver function test is to detect the indicators related to liver function and metabolism through various biochemical tests, mainly including liver disease-related serum enzymes, bilirubin, liver function-related proteins, etc., which can be used as an auxiliary means to diagnose liver and gallbladder diseases. Hepatitis B is only one type of cause of liver disease, in addition, it is also common in hepatitis C, autoimmune hepatitis, drug liver injury, etc., which may cause liver function abnormalities, but there is no abnormality in the hepatitis B two-half, so the hepatitis B two-half is normal can’t replace the liver function. Patients are advised to improve the relevant tests according to the doctor’s recommendations after evaluation to avoid misdiagnosis.