The antiviral drugs mentioned here should refer to the hepatitis B antiviral drugs, hepatitis B to eat antiviral drugs for a month, although the liver function is normal but the surface antigen is positive can not stop the drug, should be in the guidance of the doctor to stop the drug. Acute hepatitis B patients generally after hepatoprotection, antiviral treatment, about a month, the virus can be cleared, surface antigen turn negative, liver function is normal, you can stop taking the drug, only a small number of people due to low immunity, need a longer period of time can be cured. Once chronic hepatitis B patients need to take antiviral drugs, the course of treatment is generally longer, especially for patients with hepatitis B cirrhosis, generally need to take medication for life, and there is a risk of hepatitis B virus reactivation after stopping the medication, and may lead to severe acute liver failure. If non-hepatitis B cirrhosis, for hepatitis B surface antigen-positive patients with chronic hepatitis B infection, discontinuation of the drug can be attempted after meeting the conditions of hepatitis B viral DNA load, normal liver function and surface antigen conversion, and after discontinuation of the drug, regular follow-up is also required. However, it is extremely unlikely that hepatitis B surface antigen positive patients will turn negative after antiviral treatment. It is recommended to take hepatitis B antiviral drugs under the guidance of professional doctors.