In recent years, the incidence of lung cancer has been increasing year by year worldwide, among which the number of incidence in China is the first and the second in the annual incidence of malignant tumors for men and women respectively. Lung cancer has become one of the most common malignant tumors that seriously affect human health. The etiology of lung cancer is still not completely clear, but a lot of information shows that long-term heavy smoking is an important causative factor of lung cancer. The incidence of squamous and undifferentiated lung cancer is 4-10 times higher than that of nonsmokers for those who smoke more than 40 cigarettes per day for many years, and the incidence of lung cancer in urban residents is higher than that in rural areas. At present, various treatment methods for lung cancer are emerging, and new technologies are continuously applied and popularized in clinical practice. Since the effect of any single therapy on lung cancer has great limitations compared with multidisciplinary comprehensive treatment, it is necessary to emphasize on multidisciplinary comprehensive treatment for lung cancer; at the same time, there are some misunderstandings in clinical diagnosis and treatment of lung cancer for a long time, which need to be further standardized in order to At the same time, there are some misunderstandings in clinical diagnosis and treatment of lung cancer, which need to be further standardized to further improve the standardized comprehensive diagnosis and treatment of lung cancer. Comprehensive lung cancer treatment is a combination of surgery, radiotherapy and chemotherapy, supplemented by immunotherapy and traditional Chinese medicine. Combination therapy can significantly improve the remission rate of lung cancer and prolong the survival of patients. However, each treatment method can produce beneficial effects and can also combine with adverse effects. Therefore, a detailed medical history, physical examination, blood biochemistry, cardiopulmonary function, imaging, ultrasound, fibrinoscopy and even mediastinoscopy should be performed before treatment to perform detailed disease staging and comprehensive evaluation of cardiopulmonary function 医学教 育网收集整理 . Then, according to the stage of the disease and the patient’s physical condition, an individualized comprehensive treatment plan is designed, supplemented by appropriate supportive therapy. At the same time, treatment response is closely monitored and treatment plan is revised in time to improve the quality of life and survival rate. Factors affecting the prognosis of lung cancer include three aspects: 1. the condition of tumor: stage, differentiation, histological type; 2. the application of treatment methods: radicality of surgical resection, the protocol and course of chemotherapy, the dose and mode of radiotherapy; 3. the condition of patients: systemic functional status, individual differences in sensitivity to radiotherapy, immune ability, etc. In recent years, the molecular targeted therapy for lung cancer has made great progress, and new targeted therapeutic drugs have emerged continuously and achieved very encouraging results in clinical trials or formal clinical applications. Among them, epidermal growth factor receptor (EGFR) is currently the main target, and there are several drugs that target this target and have achieved good efficacy in clinical trials or clinical applications.