Active prevention and treatment of viral hepatitis is important to reduce the incidence of liver cancer. Inactivated hepatitis B virus vaccination is not only effective in preventing and treating hepatitis, but will also play a role in preventing liver cancer. Avoid unnecessary blood transfusion and application of blood products. Preventing moldy food, improving water quality and stopping drinking alcohol are also important measures to prevent liver cancer. The primary prevention of liver cancer is to prevent the occurrence of liver cancer, so that people can avoid or minimize exposure to known cancer-causing factors and risk factors. Hepatitis B and C vaccination to block HBV infection is an important way to prevent primary liver cancer, and hepatitis B vaccination is the most fundamental and effective measure to control hepatitis B. 2. 5, proper storage of various foods to prevent mold, do not eat moldy food, reduce the intake of aflatoxin, block or inhibit the carcinogenic effect of aflatoxin; 6, no alcohol abuse, active treatment of fatty liver. 7, and finally remind everyone: (1) if suffering from hepatitis (hepatitis B, alcoholic, hepatitis C, etc.) must be regular medical check-ups, at least once every 6 months; if there is abdominal pain, bloating, jaundice, wasting and other discomfort, go to the hospital as soon as possible. (2) Once the diagnosis of liver cancer is confirmed, consult and see an oncologist immediately and receive regular treatment as soon as possible.