According to the reports of authoritative organizations in recent years, globally, about 6 to 7 million people die of cancer every year, which is equivalent to the total population of a small country, and cancer has become a very important cause of death worldwide, accounting for one-fourth of deaths in developed countries and one-eighth of deaths in developing countries, such as Africa and other relatively backward countries. In developing countries, such as Africa, cancer accounts for one eighth of the causes of death. At present, 50% of cancers in developed countries are curable, so there are more tumor patients, and together with their respective spouses, cancer is closely related to each of us. So it makes sense to pay attention to the prevention and occurrence of cancer because it threatens you. We all need to establish two concepts: firstly, to care about cancer. Secondly, cancer is preventable and treatable. Also, I have a special good news for you that cancer surged in developed countries in the 1930s, and lung cancer increased rapidly because the most important factors were air pollution and smoking, but it has reached its peak and started to decline in the mid-1990s. People are also concerned about when the incidence of lung cancer will drop in our country? So everyone has to participate. Cancer prevention and treatment requires the participation of the whole nation, the active support and investment of the government, and the joint efforts of our medical personnel, and only after such a comprehensive project works can we achieve the effect of prevention and treatment. The theme of this year’s National Cancer Awareness Week is “Caring for Life, Scientific Cancer Prevention, and Better Life”. How to keep away from lung cancer? We must be clear about what cancer-causing factors bring more risks to the development of lung cancer. The first and foremost is smoking. The relationship between tobacco and lung cancer is indisputable, even though tobacco companies at home and abroad have made many false propaganda for decades, but the relationship between tobacco and health, especially the relationship with the development of lung cancer is very clear. 30-50 years ago many famous international tobacco production companies began to develop and produce low-tar cigarettes, we in China also began to develop low-tar cigarettes 30 years ago, more than 30-50 years have passed. More studies and follow-up data now show that even smoking low-tar cigarettes does not reduce the incidence of lung cancer and death. In addition, in recent years we have also noticed the health hazards of “second-hand smoke” and “third-hand smoke”, and now especially advocate that we must pay attention to the hazards of third-hand smoke to people’s health, smokers in cabs, living rooms, parlors, sofas, carpets, sweaters left behind Some carcinogenic substances will be adsorbed in these places, especially to the health of infants and children is more dangerous. The second carcinogenic factor is atmospheric and environmental pollution factors. There are two environmental factors, one is environmental pollution, and the government should increase investment in environmental management. Environmental pollution mainly includes air pollution, automobile exhaust, coal-fired gas, and environmental carcinogenic factors in industrial mines and heavy industrial areas, such as air pollution and environmental carcinogenic factors in the tin mines in Yunnan, Xuanwei mines and heavy industrial areas in northeastern provinces. Effective treatment, or let the people see more blue sky. On the other hand, the small indoor environmental pollution, including two aspects, one is the kitchen fumes pollution, the traditional Chinese diet is loved by people all over the world, but our cooking process is not complimentary, the cooking method is unhealthy, too much burning, frying, baking, frying process contains a lot of harmful substances and carcinogenic substances, which brings health hazards to the human body and will increase the incidence of lung cancer in the long run. It is recommended that people should use qualified range hoods correctly and scientifically, so that the fumes produced during cooking can be sucked away effectively in time to reduce fume pollution; at the same time, it is emphasized that people must ensure kitchen ventilation to reduce the harmful and carcinogenic substances produced during the cooking process to stay indoors. Another factor is the pollution brought by indoor decoration materials. Nowadays, with the demolition of houses, more and more people are only keen on fine decoration and ignore the impact of indoor environment on health. Some substandard building materials and paints, after being ventilated for half a year, still have heavy smell and harmful gas taste. These pungent gases contain some harmful gases and carcinogenic substances, especially those carcinogenic substances with high radon content. We hope that people who move to a new house should pay special attention to the purchase of green products when decorating their homes and ask the local environmental department to test the products before moving in. Can sputum check and chest x-ray detect early cancer? From our experience, we do lung cancer prevention and treatment in Yunnan Jielao Yunnan Tin Industry Company. We take chest X-ray and check sputum for workers once a year, and the sputum check technicians are very experienced, as a result, half of the early lung cancers can be detected during the screening, and if we check twice a year, almost all of them are found to be early. We have found a very rare type of early stage lung cancer in the world, in which cancer cells have been detected in sputum but cannot be seen on chest X-ray, and some of them cannot be found by bronchoscopy, which we call “X-ray occult lung cancer”. Therefore, we strongly advocate that we must do annual health checkups and not be paralyzed by any very small shadows in the lungs, including the traces of tuberculosis in the past, so that we can see if there are any changes in the lungs every year and deal with them as soon as possible. At the same time, I can tell you responsibly that we have also explored for such changes and found that it is not cancer after entering, but most of them are early stage cancer.