Hepatitis B is an inflammatory disease of the liver caused by the hepatitis B virus, and is currently one of the infectious diseases of category B in China. The incubation period of the disease is generally 3-6 months. After infection, patients often feel weak, may be accompanied by mild low-grade fever, and gradually appear anorexia, nausea, vomiting and other manifestations. After prolongation of the disease, liver function is severely damaged, which may increase the concentration of bilirubin in the blood, also known as jaundice symptoms. Some patients may have slight right upper abdominal discomfort and palpation may palpate a large liver. Liver function tests may show varying degrees of elevated glutamic aminotransferase and glutamic oxalacetic aminotransferase. Hepatitis B is transmitted through three main routes: mother-to-child transmission, blood transmission and sexual transmission. Blood-borne transmission is often seen in people in health care professions who are exposed, those who use medical devices and syringes that are not strictly sterilized, and those who abuse drugs intravenously, while sexual transmission is mainly seen in people who have multiple sexual partners. The goal of treatment is to maximize the elimination of hepatitis B virus, reduce the inflammation and necrosis of liver cells, delay the fibrosis of liver cells, and prevent the progression of hepatitis to liver fibrosis, cirrhosis, and liver cancer.