1.Refuse tobacco Staying away from tobacco and smoking is the most effective way to prevent cancer. 2.Prevent excessive sunlight exposure A moderate amount of sunlight is good for health, but sunlight exposure can cause skin cancer. Therefore, we should pay attention to wearing clothes, hats and sunscreen to effectively avoid ultraviolet radiation. 3.Limit smoking and alcohol consumption Excessive alcohol consumption can increase the risk of oral cancer, laryngeal cancer and esophageal cancer, and the risk of cancer increases significantly for those who both smoke and drink. The intake of alcohol and tobacco should be restricted. 4.Rational diet and prevention of obesity Limit the intake of fat and calories. Minimize the consumption of nitrite-containing foods and pickled foods. Limit the consumption of fermented, moldy, sauerkraut, pickles and substances containing amine nitrite; limit the consumption of smoked, fire-roasted and repeatedly used fried foods; limit the consumption of foods that are too hot, too coarse, too hard or too much fat. Although it is not clear which components have good protective effect, researchers recommend eating fruits and vegetables 5-9 times a day. Human papillomavirus (HPV) is considered to be the main cause of cervical cancer. Having multiple sexual partners makes it easy to contract high-risk HPV, which eventually progresses to cervical cancer. 7.Avoid exposure to carcinogens in the working environment Wear special protective clothing and masks at work. 8.Watch out for industrial pollution It is an indisputable fact that some chemicals in the environment can cause cancer, but from a wider perspective, industrial pollution is not the main cancer-causing factor in most tumors. 9.Regular medical checkups Early detection of possible abnormalities and early treatment. 10.Control emotions, learn to reduce stress, maintain optimism and pay attention to psychological balance. 11.Exercise and enhance physical fitness.