Hepatitis B surface antigen changes are generally irregular, and hepatitis B antigen can either be elevated or decreased. If the body’s immune system responds by clearing the hepatitis B virus from the body, which is also known as a self-healing state, the hepatitis B surface antigen can drop to the normal range, which is equivalent to curing hepatitis B completely. For the majority of hepatitis B patients, it is very difficult to change from positive to negative hepatitis B antigen, and only a small percentage of people can change from positive to negative and achieve a self-healing state. For hepatitis B surface antigen each time the results of the review may be constantly changing, there is no rule to follow. At present, for hepatitis B surface antigen or value range, if within the normal range, less than the normal value is negative, greater than this value is positive, indicating that the body has hepatitis B virus, belong to the state of infection. Hepatitis B surface antigen is always changing, there is no rule to follow.