However, because lung cancer is a local manifestation of a systemic disease; three-quarters of patients have lost the chance of surgery at the time of clinical diagnosis; micro-metastases exist in patients who can be operated; and there are limitations of different lung cancer treatment methods, the treatment of lung cancer should not be one-sidedly focused on local treatment or a particular treatment method, but should be based on different stages of disease, different tissue types, different tumor biology and systemic conditions. The treatment of lung cancer should not focus on local treatment or any one treatment method, but should integrate surgery, radiotherapy, chemotherapy, immunotherapy, Chinese medicine and other multidisciplinary treatment methods according to different stages of disease, different tissue types, different tumor biologic behaviors and systemic conditions.