Etiology: Patients with lung cancer have a long history of heavy smoking. The etiology of lung cancer is still not completely clear, and a lot of information shows that the risk factors of lung cancer include smoking (including second-hand smoke), stone wool, radon, arsenic, ionizing radiation, halogen alkenes, polycyclic aromatic compounds, nickel, etc. Symptoms: Lung cancer does not have any special symptoms in the early stage, but only symptoms common to general respiratory diseases, such as cough, sputum and blood, low fever, chest pain and tightness, which can be easily ignored. Chest X-ray shows lobulated lung mass with burr and cut marks. Treatment: Minimally invasive surgery with full thoracoscopy, little trauma, fast recovery, no chemotherapy, high quality of life.