Hepatitis B can not be completely cured. Viral load less than 30IU/mL means that the virus is under control. Hepatitis B is a disease caused by infection of hepatitis B virus, which is a chronic disease, once infected with this virus, patients will carry it for life, and clinically it is not possible to completely cure hepatitis B. However, it is possible to control the replication of hepatitis B virus through the existing medical means. However, it is possible to control the replication of the hepatitis B virus through existing medical means. Usually, the amount of Hepatitis B virus is less than 30IU/mL, which means that the amount of Hepatitis B virus is very low and has been effectively controlled. Hepatitis B patients should pay attention to ensure a good routine in daily life, avoid staying up late and not drinking alcohol. At the same time, they should not use drugs indiscriminately, so as not to aggravate the burden on the liver, and should consult the doctor before taking drugs to avoid drugs affecting the liver. After the condition of hepatitis B is under control, patients should have regular checkups to avoid recurrence of the disease.