The concept of multidisciplinary treatment for lung cancer is based on the patient’s physical condition, the specific location of the tumor, the pathological type of lung cancer, the degree of cell differentiation, the scope of invasion and the development trend, combined with the changes in the molecular biology of cells, the existing multidisciplinary effective treatments are applied in a planned and rational manner to achieve the best treatment effect at the most suitable economic cost, with the aim of significantly increasing the cure rate, prolonging the life of lung cancer patients and improving their quality of life. The aim is to improve the cure rate of lung cancer, prolong the life of lung cancer patients and improve the quality of life of lung cancer patients. After entering the 21st century, through multicenter randomized clinical trial studies and meta-analysis of evidence-based medicine, lung cancer treatment is in the era of comprehensive treatment, and people no longer argue which treatment method is more brilliant. Basic principles and strategies of multidisciplinary comprehensive treatment 1. lung cancer is a local problem or a systemic problem 2. the pros and cons of treatment should be correctly evaluated 3. the arrangement of various treatments should be reasonable 1. lung cancer is a local problem or a systemic problem Lung cancer is a malignant tumor with high malignancy and very poor prognosis. in a sense, whether it is SCLC or NSCLC, it is not a local disease but a systemic disease. disease. Some lung cancers may be dominated by local diseases, while others are dominated by systemic diseases, mainly depending on the existence of tiny metastases outside the lungs, which cannot be seen or felt, and there is no obvious relationship between the two and the early and late local lesions of lung cancer. Properly evaluating the pros and cons of treatment Currently, the clinical treatment methods for lung cancer are mainly surgery, radiotherapy and chemotherapy, all of which have certain adverse effects and cause certain harm to the patient’s organism. If the above mentioned methods are not properly adopted, not only can they not bring benefits to patients, but also accelerate their death. For the surgical treatment of lung cancer, the current trend is to fully consider the contradictory and unified relationship between safe resection and preservation of lung function. The treatment principles of surgery are: maximum resection of tumor and maximum preservation of lung function. For some central lung cancers that invade the pulmonary artery trunk, main bronchus or augmentation, currently functional lung tissues can be reconstructed and preserved through bronchial and pulmonary artery double sleeve formation surgery and augmentation resection and reconstruction, instead of total lung resection as previously emphasized. This has led to improved quality of survival and survival rate in the long term. Third, the arrangement should be reasonable For early-stage NSCLC, local control is the main problem, and pure surgical treatment can achieve radical cure, and there is no need to use another treatment, while for late stage NSCLC, although the enlarged resection or the addition of postoperative radiotherapy is taken as far as possible, all cannot eliminate the possibility of distant metastasis. Therefore, necessary systemic therapeutic measures must be used to achieve the goal of eradication. Nowadays, it is believed that most patients with stage IIIa NSCLC lung cancer have potential distant metastases at the time of clinical diagnosis, and it is advocated that 2-3 cycles of preoperative neoadjuvant chemotherapy or 1-2 times of bronchial artery intervention should be performed to shrink the local lesions and control the potential “subclinical” metastases before surgical treatment. For SCLC, most of them are systemic at the time of diagnosis, so chemotherapy should be the first choice of treatment. After 2-3 cycles of chemotherapy, even if the pathological diagnosis is stage I after surgery, 4-6 cycles of systemic chemotherapy should be added after surgery.