Among the multiple treatments for lung cancer, surgery is the only treatment method that can achieve a cure. And the curative effect of surgery is closely related to the early or late detection of lung cancer. Lung cancer detected at an early stage can have a very satisfactory treatment effect after surgery. According to the National Cancer Center of Japan, the 5-year survival rate after surgery for early-stage (stage I) lung cancer is nearly 90%. In a study of the International Early Lung Cancer Action Plan, the 10-year survival rate was even 92% when low-dose spiral CT was applied annually for routine chest scans of high-risk groups to screen out early lung cancer patients and perform timely surgery! High-risk groups of lung cancer: long-term smokers; long-term exposure to kitchen fumes; long-term exposure to asbestos and high concentration dust; long-term residents of middle-aged cities with serious industrial pollution; gas workers, coke oven workers, foundry workers, etc. who are frequently exposed to polycyclic aromatic hydrocarbons; long-term patients with chronic bronchitis, emphysema, interstitial pneumonia, etc.; long-term depression or immune system decline; middle-aged people with family history of tumors Those with family history of tumor or above; those with lung shadow found in physical examination. People with high incidence of lung cancer should be reviewed regularly, and early detection and treatment are the keys to cure lung cancer.