The length of time a hepatitis B carrier can live is mainly related to the severity of the disease, treatment and individual patient factors, and should be analyzed on a case-by-case basis. Hepatitis B virus carrier mainly refers to the infection of hepatitis B virus, only the existence of virus replication without immune recognition and immune damage, the patient’s liver function is normal, abdominal ultrasound and CT examination does not appear any abnormalities, such patients life expectancy is no different from normal people. However, some hepatitis B virus carriers may have increased hepatitis B virus replication and immune damage when their immunity is low, resulting in abnormal liver function, which can be recovered with corresponding antiviral treatment and does not affect life expectancy. If the disease cannot be controlled, further development may lead to hepatitis, or even cirrhosis and liver cancer, and the survival period will be significantly shortened. Therefore, hepatitis B carriers can live normally without clinical symptoms and do not need to be treated, but it is recommended to review regularly and treat promptly when the condition changes.