Hepatitis B virus carriers are also known as chronic hepatitis B virus infected people who are in the immune tolerance period mentioned earlier. At this time, the hepatitis B virus replicates in large numbers in the liver cells, but does not damage the liver; the human immune system is also unable to recognize and kill the hepatitis B virus. Therefore, people and hepatitis B virus are in a state of “peaceful coexistence and non-interference”. Hepatitis B virus carriers do not have any clinical symptoms and can only be detected through laboratory tests. Usually, the symptoms are: (1) positive hepatitis B surface antigen, (2) positive HBV DNA, and (3) normal liver function and liver ultrasound. Under the condition of normal human immunity, hepatitis B virus carriers do not need treatment and only need to have liver function, HBV DNA, liver, gallbladder and spleen ultrasound, and methemoglobin checked every six months. If you are still in hepatitis B virus carrier status at the age of 30-40, a liver puncture pathology is recommended for an accurate assessment of the degree of inflammation and fibrosis in the liver.