The life expectancy of people infected with hepatitis B virus varies from person to person and is not directly related to whether they are infected with hepatitis B virus or not for the following reasons: 1. After the population is infected with hepatitis B virus, 2/3-3/4 of them may not develop hepatitis for life or only have mild liver inflammatory activity with no obvious clinical symptoms and may eventually die for other reasons, and their life expectancy is not directly related to whether they carry hepatitis B virus or not; 2, Some patients with hepatitis B, i.e., those with hepatitis activity and obvious symptoms, if their hepatitis can be well controlled after scientific treatment and they do not develop end-stage liver diseases such as cirrhosis, liver cancer and liver failure, their life expectancy will not be affected; 3. Even if patients with hepatitis B unfortunately develop early cirrhosis, they can still survive for a long time as long as they undergo scientific treatment to curb the disease progress and their liver function is sufficiently compensated If a patient with hepatitis B is unfortunate enough to develop early stage liver cancer, he can still survive for a long time, i.e., his life expectancy can still be reduced without hepatitis B virus infection; 4, if a patient with hepatitis B is unfortunate enough to develop early stage liver cancer, after surgery and local ablation treatment, he can still obtain a relatively long life expectancy; 5, for end-stage liver diseases such as severe hepatitis, advanced cirrhosis, and mid- to late-stage liver cancer, there is no better treatment method except liver transplantation as early as possible. The life expectancy of patients may be affected by hepatitis B virus infection, but the specific survival period varies from person to person and from disease to disease.