Chronic liver disease: especially viral hepatitis is closely related to the development of liver cancer, and is called the “catalyst” of liver cancer by the medical profession, among which hepatitis B (HBV) and hepatitis C (HCV) are the most important. Therefore, hepatitis B virus and hepatitis C virus are considered as one of the cancer-promoting factors, which is the cause of liver cancer. Long-term consumption of pickled, fried and smoked foods can also induce liver cancer: nitrosamines contained in pickled foods and 3,4-benzopyrene contained in fried and smoked foods can induce cancer, so we should minimize the consumption of pickled, fried and smoked foods such as cured meat, roasted meat, grilled sausage, salted fish and pickled vegetables in our daily life. 3. Cirrhosis: Medical observation shows that about 50%-90% of liver cancer patients have different degrees of cirrhosis, so cirrhosis is also regarded as a cancer-promoting factor, so patients with cirrhosis should do a good job of regular review to prevent the occurrence of liver cancer. Long-term consumption of pickled, fried and smoked foods can also induce liver cancer: nitrosamines contained in pickled foods and 3,4-benzopyrene contained in fried and smoked foods can induce cancer, so we should try to reduce the consumption of pickled, fried and smoked foods such as cured meat, grilled meat, grilled sausages, salted fish and salted vegetables in our daily life. 3. Cirrhosis: Medical observation shows that about 50% to 90% of liver cancer patients have different degrees of cirrhosis in combination, so cirrhosis is also regarded as a cancer-promoting factor, so patients with cirrhosis should do a good job of regular review to prevent the occurrence of liver cancer.