Environmental factors caused by tobacco, alcohol and human papillomavirus infection should be avoided as much as possible. Therefore, in terms of prevention, the first and most important thing is to ban smoking and alcohol. Smoking and alcohol are forbidden, and many tumors have disappeared, especially laryngeal cancer, which has a lot to do with this. Epidemiologically, laryngeal cancer is less in the south and more in the north. Of course, various reasons and environmental factors in the north are related to the stimulation of alcohol and tobacco. In the ward, there are mostly fewer women and more men, that is, men are more stimulated by alcohol and tobacco. Therefore, prevention means smoking and drinking, and eating habits should also be improved. The second is the environment. When the environment is bad, wear a mask and try not to go to dusty places. Some people don't smoke, but in places where they smoke all day, they are second-hand smoke, which is more powerful than first-hand smoke, so they not only don't smoke, but also can't go to places where they smoke, thus avoiding smoking. Wine is also commonly used in modern communication. Drink less wine. A certain amount and a very small amount of wine may also promote blood circulation and be beneficial to health, but drinking too much wine is definitely harmful. And human papillomavirus. Some people see papillomavirus, and some people have it on their skin. There is papillomavirus in oropharynx. Treat as soon as possible. Don't think that papilloma is benign. Ignore it and it won't work. There are also precancerous lesions, which must be treated in time to prevent them from developing into further cancer and then treated. Precancerous lesions will be relatively simple to handle, with little trauma and little impact on function, and it will be troublesome when it comes to cancer. It is very important to treat precancerous lesions in time. In addition, we usually pay attention to ourselves, and once we have clues, we will go to treatment immediately, which is also one of the preventive measures for cancer.