Over the years, the consultation rate of liver cancer patients in our hospital has been increasing year by year. If we want to avoid the occurrence of liver cancer, we have to eliminate it from the root, so what are the causes that trigger liver cancer? Long-term consumption of pickled, fried and smoked foods: pickled foods contain nitrosamines and fried and smoked foods contain 3,4-benzopyrene, which can induce cancer, so we should reduce the consumption of pickled, fried and smoked foods such as cured meat, salted fish, grilled meat, grilled sausage and pickled vegetables as much as possible in our daily life. Chronic liver disease: especially viral hepatitis is particularly close to the development of liver cancer, and is called the “catalyst” in liver cancer chemistry by the medical profession, among which hepatitis B (HBV) and hepatitis C (HCV) are the most important, and some data show that more than 40% of liver cancer patients have a history of chronic hepatitis, and those with Ao anti (HbsAg) are positive. Therefore, hepatitis B virus and hepatitis C virus are regarded as important causes of liver cancer. Chemical carcinogens: What are the causes of liver cancer? Chemical substances that can cause liver cancer are mainly N-nitroso compounds, such as nitrosamines and nitrosamides. In addition, pesticides, alcohol, safrole, etc. can also induce liver cancer. Fourth, water pollution: serious pollution of drinking water quality, especially polluted ditch water, followed by river water, well water is the lowest. In villages without running water facilities, drinking well water should be promoted.