Hepatitis B activity, as the name implies, is the emergence of hepatitis activity after the patient has been infected with the hepatitis B virus, hepatitis activity is generally determined by the following two tests: 1, liver function tests: in the liver function tests, if there is an increase in the level of transaminases, jaundice indicators rise, are indicative of current hepatitis activity. 2, biopsy: if the liver puncture suggests the presence of inflammation and necrosis in the liver lobules, also indicates that If the biopsy indicates the presence of inflammation and necrosis in the lobules of the liver, it also indicates that hepatitis is currently active. Therefore, the active phase of hepatitis B means that the patient is carrying hepatitis B on the basis of elevated levels of liver function transaminases and jaundice, and liver puncture shows the presence of liver inflammation and necrosis.