There are many treatment methods for lung cancer. In real life, we have seen too many examples of failure due to ignorance of lung cancer treatment principles and arbitrary choice of treatment means. The reason is that patients and their family members lack basic knowledge of lung cancer treatment, which leads to biased listening and believing, such as: pursuing single prescriptions; blindly worshiping so-called advanced treatment measures; unwilling to trust targeted new special tumor drugs; arbitrarily rejecting treatment plans of professional doctors, such as surgery, radiotherapy, chemotherapy, etc., so as to delay the best time for treatment. Here, let our lung cancer patients, scientifically, take the first step to successfully fight against cancer. The principle of “divide and treat” Lung cancer is divided into two categories, namely, small cell lung cancer and non-small cell lung cancer. Each different type of lung cancer has its own different disease essence, their histological origins are different, their occurrence, development and regression have their own intrinsic basis, their own different biological behaviors, and their prognosis is also different. In the past, we have not been able to differentiate them well in treatment, resulting in failure to improve the efficacy of lung cancer. With the development of medicine, we know that lung cancer should be treated in different ways. Research shows that small cell lung cancer metastasizes earlier and develops faster than non-small cell lung cancer, therefore, small cell lung cancer is generally considered as a systemic disease and not suitable for local treatment such as surgery. Small cell lung cancer is more sensitive to chemotherapy, so chemotherapy is the main treatment for small cell lung cancer, and surgery and radiotherapy are only used as an adjunct to chemotherapy. If the tumor shrinks significantly through chemotherapy, considering that the residual lesions may contain drug-resistant cell lines or mixed with non-small cell lung cancer components such as squamous carcinoma and adenocarcinoma, local surgery or radiotherapy can be performed. Small cell lung cancer confined to the chest cavity can be cured by chemotherapy + radiotherapy with a 25-35% cure rate, which is a remarkable progress. 2.Non-small cell lung cancer should also be treated differently according to different pathological types Non-small cell lung cancer contains many types, and they are generally treated with similar principles. For example, they tend to grow locally and metastasize late, so for early stage and some mid-stage early non-small cell lung cancer, surgery is the fundamental solution to the problem. However, for inoperable non-small cell lung cancers, the prognosis is highly dependent on their pathological types and treatment varies. For example, carcinoid tumor and alveolar cell carcinoma, which tend to be localized, radiotherapy and chemotherapy are less effective, while adenocarcinoma is more sensitive to both radiotherapy and chemotherapy than squamous carcinoma, and the most popular biologic targeted therapies, such as gefitinib (ERSA) and erlotinib (Troche), need to be more targeted to improve the efficacy. Principles of staging treatment Lung cancer is divided into stages I, II, III and IV, and small cell lung cancer can also be simply divided into limited stage and extensive stage. Accurate staging of lung cancer is as important as figuring out the enemy’s situation before fighting a war. Only when we have a clear grasp of tumor site, size, surrounding infiltration degree, lymph nodes and distant metastasis, can we formulate a reasonable treatment plan. Lung cancer staging is one of the most important clinical prognostic indicators, and also an extremely important treatment predictor. The principle of staging is a must for lung cancer treatment, because selecting treatment according to staging classification is more in line with the biological characteristics of lung cancer and can avoid blindness and arbitrariness of treatment. For example, early stage lung cancer tends to grow locally and local treatment can be considered, while late stage mostly shows metastasis and needs to rely on systemic treatment. Different stages have very different treatment principles and specific righteous indignation, and the effects and prognosis also differ significantly. Staging treatment principles and details of staging treatment implementation are: surgery is preferred for stage I and II lung cancer, stage III lung cancer requires organic multidisciplinary arrangement, and stage IV lung cancer is mainly treated with inverse therapy such as chemotherapy or targeted therapy. Principles of comprehensive treatment Lung cancer treatment by a single means has been proven to have great limitations. Each treatment method has its unique therapeutic effect and has different degrees of deficiency. Therefore, we need to apply the existing treatment methods in a planned and rational manner according to the patient’s body condition, pathological type, invasion scope (stage) and development trend of the tumor, in order to improve the cure rate significantly. Not only to improve the cure rate, but also to improve the quality of life of patients. This is also the principle of comprehensive treatment for lung cancer. Whether early, intermediate or advanced lung cancer requires multidisciplinary and comprehensive treatment. Of course, comprehensive treatment is not a rush to adopt mechanical superimposed treatment regardless of what pathological types and clinical stages, and to do more and more without prioritizing, but to apply appropriate treatment methods and target them to benefit each patient. ”Tailor-made”—individualized treatment principle Tumor clinical has entered the era of evidence-based medicine, and the selection of each treatment measure emphasizes following the best clinical evidence and standardized treatment, but the principle of individualized treatment should not be forgotten. Since each person has different physique, different previous diseases, different types of tumors, different sizes, different organs invaded, and different complications, each person is different, and in determining the comprehensive treatment plan, each person must be given targeted treatment according to his or her specific conditions, which is called dialectical treatment in Chinese medicine. The principle of individualized treatment is to treat different patients differently, because it varies from one patient to another, from one disease to another, and from one time to another, without making a one-size-fits-all approach. For example, although sometimes chemotherapy of sufficient intensity is necessary, it does not apply to patients of advanced age. An individualized lung cancer treatment strategy must rely on clinical factors and, more importantly, on functional genomic and functional proteomic factors.