Specifically, there are the following points (1) Actively treating precancerous lesions, which is effective in preventing the occurrence of cancer. (2) Maintain good emotions, actively overcome sadness, anxiety, pain and impatience in life, do your best to increase joy in life and work, less sorrow and more dash. Learn to express your emotions openly, and develop a broad-minded and unconcerned character. Gao Qilong, Department of Integrative Medicine, Henan Cancer Hospital (3) Change the habit of smoking and drink less alcohol can reduce the incidence of cancer, especially lung cancer. (4) Change bad habits, such as eating less sauerkraut, eating more fresh vegetables and fruits, not eating moldy and smoked food, eating and drinking not very hot and hard, not too fast, and eating less stimulating food. (5) advocate late marriage, birth control, pay attention to women’s health, and actively treat women’s diseases. Advocate their own breastfeeding, breastfeeding period to about a year is appropriate. (6) Carry out mass census and general treatment, vigorously carry out investigation and research, understand the causes of cancer, explore the law of cancer occurrence, and further develop simple, easy to implement and effective preventive measures. (7) Do a good job in treating the three wastes, protecting environmental hygiene, preventing environmental pollution, investigating and properly handling carcinogenic substances. People engaged in occupations related to cancer should strictly abide by the operating procedures, strengthen personal protection, minimize the contact time and quantity with carcinogenic substances, and do a good job in regular physical examination. (8) Promote the development of physical activities to enhance physical fitness and improve the ability to resist cancer. (9) Low-fat food should be chosen. High-fat diet can make the normal anaerobic bacteria in the large intestine turn the relevant components of bile into carcinogenic substances. Therefore, the intake of fat must be limited. High-fat food in addition to meat, should also pay attention to the fat in fish, eggs, milk containing science. (10) mold prevention. Moldy food and food can often be found in the carcinogenic substances aflatoxin. Therefore, food should be vigorously promoted after the harvest as soon as possible to dry or dry, the location of food storage should be ventilated and dry. In daily life, if the bun, bread, rice and other food has mold or grow yellow, green hair is absolutely no longer edible. In modern families, food should not be stored in refrigerator for more than 7 days, and even if it is frozen, it should not exceed 3 months. There are many ways to prevent the occurrence of cancer, but another point that must be noted is to receive regular annual checkups by oncologists for early prevention, early detection, early diagnosis and early treatment.