A positive test result for hepatitis B virus core antibody in a pregnant woman indicates previous infection or vaccination against hepatitis B, or she may be in the midst of an infection. Hepatitis B virus core antibody is a non-protective antibody produced by the body after infection with the hepatitis B virus, and is a sensitive serologic marker to help people diagnose hepatitis B. The hepatitis B virus core antibody is a marker for the hepatitis B virus that is produced by the body after infection with the hepatitis B virus. For pregnant women, if they get a positive test result for hepatitis B virus core antibody, it means that they have a history of previous infection or non-protective antibody after hepatitis B vaccination, or they may be infected by hepatitis B virus, which needs to be analyzed comprehensively together with other test results. If it is only a past infection, there is no need to worry too much, as long as you pay attention to closely test the liver function. During pregnancy, pregnant women should do a comprehensive pregnancy checkup, and consult a doctor if there is any abnormality in the body.