How long you can live with a quantitative HBV-DNA test value of 10 to the eighth power cannot be generalized and is mainly related to the progression of the disease and whether or not effective treatment has been administered. In general, if treated properly, survival is no different from that of a normal person, but regular review is required. If cirrhosis develops, the patient’s survival will be greatly affected, ranging from a few years to more than 10 or decades. In case of gastrointestinal bleeding, hepatic encephalopathy, hepatorenal syndrome, and liver failure, the patient may die within a short period of time, possibly within hours or days and weeks. If primary hepatocellular carcinoma develops, the 5-year survival rate does not exceed 30%. In addition, a quantitative HBV-DNA test value of 10^8 U/L for hepatitis B virus indicates a high level of viral replication, active replication and relatively high infectivity. Liver function, ultrasound of the hepatobiliary system, and coagulation function are needed to fully assess the condition. A high level of virus replication that lasts for a long time may cause liver damage, inflammation and necrosis of liver cells or fibrosis of the liver, and even development of cirrhosis and liver cancer. Therefore, a quantitative HBV-DNA test value of 10^8 U/L for hepatitis B virus can only indicate that the patient has a high level of virus, but the specific impact on survival should be judged according to his specific condition, and if necessary, a liver puncture biopsy is recommended to clarify the inflammation of the liver and decide whether treatment is needed.