With the rapid development of medical research, lung cancer will be conquered one day, only the exact time is still unknown. Lung cancer is a common malignant tumor of the respiratory system, which can be caused by various factors such as heredity, smoking and environment. At present, early stage lung cancer is mainly treated by surgical resection after diagnosis, and after surgery, radiotherapy and targeted therapy can be supplemented depending on the specific condition. After active treatment, early stage lung cancer patients can have a survival rate of about 80% in five years. Advanced lung cancer can be treated with radiotherapy, chemotherapy, targeted therapy, immunotherapy and other comprehensive treatments. Although it is not clear when lung cancer can be conquered, the diagnosis and treatment of lung cancer are now relatively mature and the treatment effect is good. Therefore, after diagnosis, patients can actively cooperate with doctors for treatment and do not need to worry too much.