Lung cancer is by far the most common cause of cancer death, and its incidence and mortality rates have remained high. According to statistics, less than 15% of all patients diagnosed with lung cancer can survive for 5 years! Faced with such a grim reality, we cannot help but wonder, is it not possible to prevent and cure lung cancer? In fact, lung cancer is a disease that can be prevented and cured. Here we use the relevant data to illustrate. First of all, lung cancer is a preventable cancer. Current research shows that more than 85% of lung cancers are caused by smoking (including secondhand smoke), and the incidence of lung cancer in women is nearly twice that of men at the same dose of tobacco exposure! In other words, lung cancer is a tumor related to bad living habits. As long as we correct bad living habits and stay away from tobacco, most lung cancers can be prevented, especially for women, who are more likely to develop lung cancer when exposed to tobacco and should stay away from it! Secondly, lung cancer is not incurable. The most important reason for the high death rate of lung cancer is that more than 80% of patients are already in advanced stage when diagnosed and have lost the chance to be cured. Patients with early detection and early surgical treatment have a good chance to be cured. According to the data from the National Cancer Center of Japan, the overall 5-year survival rate after surgery for stage I lung cancer is nearly 90%, and the 5-year survival rate for lung cancer with GGO (ground glass shadow) on CT is 100%; in a project called “International Early Lung Cancer Action Plan”, low-dose spiral CT is used for In a project of the International Early Lung Cancer Action Plan, annual routine chest scans were performed for high-risk groups, and the 10-year survival rate was 92% after timely surgery for very early stage lung cancer patients! This shows that the key to cure lung cancer is early detection and early treatment. Therefore, the focus should be on behavioral prevention for lung cancer, and for those with lung cancer-related risk factors (smoking or secondhand smoke), regular medical checkups (annually) should be performed. During physical examinations, we should not be satisfied with “no abnormality” of chest X-ray or chest X-ray, but should have regular CT scan of the chest to strive for early detection of lung cancer to obtain good treatment effect. Therefore, lung cancer can be prevented and cured to a large extent if we maintain good living habits and very good health awareness!