Hepatitis B is not non-contagious, because hepatitis B is a contagious disease, but the probability of transmission is related to the viral load of the hepatitis B patient and the infected person’s own immunity, the more hepatitis B virus replication, the stronger the infectivity. There are three main ways of transmission of hepatitis B: 1, blood transmission: the input of blood and blood products infected by the hepatitis B virus can cause hepatitis B after transfusion, in addition, can also be transmitted through contact with broken mucous membranes; 2, sexual transmission: sexual life is also an important way of transmission of the hepatitis B virus; 3, vertical transmission from mother to child: is the most common way of transmission of hepatitis B. The transmission is mainly in the second trimester of pregnancy, especially in the second trimester of pregnancy. Its transmission is mainly in the second trimester of pregnancy, especially during labor and delivery, so mother-to-child interruption is an important way to effectively control the transmission of hepatitis B. If you are inadvertently infected with the hepatitis B virus, you should determine whether the virus has caused damage to the liver or other organs. If there is abnormal liver function, use liver-protective and enzyme-lowering therapy. For patients who show signs of elevated transaminases and liver fibrosis, long-term oral anti-hepatitis B virus treatment with nucleoside analogues should be administered under medical supervision. If symptoms of cirrhosis and complications such as ascites, hepatic encephalopathy, and gastrointestinal bleeding are present, anti-fibrosis as well as treatment for the complications should also be administered.