Whether to consult thoracic surgery or respiratory medicine for lung tumors depends on the actual situation. Most of the patients do not know they have lung tumors, but come to the clinic because of the symptoms, which are mostly respiratory symptoms, such as coughing, coughing up sputum, or fever, so most of the patients consult respiratory medicine first. If the condition of lung tumor is clarified before consultation, and if surgery can be performed for radical treatment or surgical treatment is needed, thoracic surgery is usually chosen, for example, some benign tumors of lung and early peripheral lung cancer can be surgically resected in the lung to achieve the purpose of radical treatment. Some lung tumors can not be eradicated by surgery or have lost the chance of surgery, so they can only be treated by internal medicine, usually choose respiratory surgery or oncology, for example, chemotherapy, radiotherapy, targeted therapy, bio-immunotherapy, etc. for patients with advanced lung cancer or middle to advanced lung cancer. There are also some lung tumor patients who have undergone surgery and are followed up in respiratory medicine or medical oncology at a later stage.