It is possible to have a single positive hepatitis B core antibody and have been infected with the hepatitis B virus, but have been cured, as evidenced by a positive core antibody without the production of protective surface antibodies. However, it is also possible to be a carrier of the hepatitis B virus. Positive hepatitis B core antibody usually indicates that the patient has been infected with hepatitis B virus, because the half-life of hepatitis B core antibody is long, as long as the body has been infected with hepatitis B virus, hepatitis B core antibody will continue to exist in the body for many years. At this time, whether the patient needs treatment should be analyzed with reference to other indicators, such as perfecting hepatitis B DNA examination and liver function test. If the result of hepatitis B DNA test is negative and liver function is normal, it generally means that hepatitis B has been cured, but regular review is needed. If the result of Hepatitis B DNA test is positive, it generally means that the patient is a carrier of Hepatitis B virus, which needs to be reviewed regularly and analyzed together with liver function. It is recommended that patients go to regular hospitals and undergo relevant tests to clarify their condition.