Hepatitis B virus dna test result 7.98 does not represent the severity of the disease, but only reflects the replication of the hepatitis B virus, the specific severity of the disease depends on the liver function and transaminase, whether there is liver fibrosis, cirrhosis performance, and so on. 1. The absence of abnormal liver function, fibrosis and cirrhosis suggests that the disease is not serious. Hepatitis B DNA quantification reflects viral replication, high value is mostly seen in early stage of hepatitis B or before antiviral treatment, on the contrary, it suggests that the viral replication is low, mostly seen in chronic hepatitis B. 2. Accompanied by liver function abnormality, liver fibrosis, cirrhosis, no matter how big or small the DNA quantitative value is, it suggests that the disease is serious, and it is necessary to carry out antiviral treatment for hepatitis B, such as taking entecavir, tenofovir, etc., and then carry out symptomatic supportive treatment based on antiviral treatment. The medication should be taken under the guidance of a doctor. Hepatitis B patients should go to the hospital regularly for follow-up examination of liver function and liver ultrasound, and be treated under doctor’s guidance.