Hepatitis B antibody but item 5 is positive, indicating that one has been infected with Hepatitis B. If the results of other items of Hepatitis B 5 are negative, there are two kinds of situations, one is that the previous infection has been cured, which is not a cause for concern, and the other is that during the recovery period of the acute infection, which requires regular rechecking of Hepatitis B 5. In hepatitis B 5 tests, item 5 is hepatitis B core antibody, if the result of this test is positive, hepatitis B antibody is also positive, and other items are negative, it means that you have been infected with hepatitis B virus. In one case, the hepatitis B virus has been cleared by one’s own immunity after previous infections, and the other indicators are negative, indicating that the virus does not exist in the body. At this time, if the results of further improvement of the quantitative measurement of hepatitis B antibody show that the titer of antibody is less than 100IU/ml, hepatitis B vaccine can be injected, so that the body can produce a high titer of hepatitis B surface antibody to prevent hepatitis B virus infection. Hepatitis B vaccination is an effective way to prevent hepatitis B virus infection and can effectively reduce the chance of hepatitis B infection. Another possibility is that during the recovery period of acute hepatitis B infection, hepatitis B antibody positivity and hepatitis B V positivity may also occur. In this case, hepatitis B surface antigen may reappear positive, and hepatitis B V should be rechecked on a regular basis. Hepatitis B five positive test results suggest timely medical treatment, further diagnosis and treatment under the guidance of professional doctors.