Hepatitis B surface antibody greater than 1000 IU/L is not serious and is normal. Hepatitis B surface antibody is produced due to the stimulation of the immune system by the hepatitis B virus surface antigen, which can bind to the hepatitis B virus and neutralize it. The higher the hepatitis B surface antibody value, the stronger the resistance to the hepatitis B virus, and the lower the hepatitis B surface antibody value, the weaker the resistance to the hepatitis B virus. When the body has a high hepatitis B surface antibody value, it may be because it has been vaccinated against hepatitis B and already has hepatitis B surface antibodies in its body; or it may be because it has inadvertently been infected with the hepatitis B virus, but through its own immunity, it eventually overcomes the virus and produces its own hepatitis B surface antibodies. In any case, hepatitis B surface antibody greater than 1000 IU/L is not only not serious, but also good. If a patient goes for examination because of discomfort in the liver area, fever, or loss of appetite, although a hepatitis B surface antibody value greater than 1000 IU/L is normal, it is still recommended to check other indicators to clarify whether other types of hepatitis are the cause. When the human body has a low hepatitis B surface antibody value, the antibody can be increased by injecting the hepatitis B vaccine to avoid infection with the hepatitis B virus.