1.Control air pollution: Living in polluted air for a long time, especially in big cities, there is almost no blue sky and white clouds, and almost no stars at night, the lungs inhale harmful gases, cell degeneration occurs, the DNA in the cells mutate, lung cancer will occur, so the incidence of lung cancer remains high year by year. Doing a good job in environmental protection, effectively controlling air pollution, advocating low emission cars in big cities in recent years, driving less and reducing car exhaust are all signs of strengthening environmental awareness, thus achieving the purpose of lung cancer prevention. It is recommended that urban people regularly vacation in deep mountains and sparsely populated western and mountainous areas to breathe unpolluted air. 2. Prohibition and control of smoking: Prohibition and control of smoking, first of all, should focus on reducing the proportion of smokers in the population, which requires the formulation of certain laws or regulations to restrict people, especially to restrict teenagers from smoking. You do not smoke, but passive smoking can also damage the DNA of lung cells, cancer. Smoking should be banned in all public places. Keep away from people who smoke. 3.Occupational protection: For mining areas where radioactive ores are mined, effective protective measures should be taken to minimize the amount of radiation to which workers are exposed. For workers exposed to carcinogenic compounds, various practical and effective labor protection measures must be taken to avoid or reduce the contact with carcinogenic factors. In recent years, radiation from computers and cell phones should not be ignored either. Do not turn on the computer every day. Use headphones for more cell phone calls, and it is best to talk on a landline instead. The reasons for the increase of cancer incidence in recent years are related to these.