Lung cancer is treatable. Most lung cancer patients can extend their life span through comprehensive treatment. A part of early stage patients can be cured by surgical resection, so the diagnosis of early lung cancer is very important. It is recommended that men over 50 years old who smoke and those with family history should have a physical examination at least once a year, and low-dose spiral CT can detect microscopic lesions. The main symptoms of early stage lung cancer include cough, coughing sputum, blood in sputum, chest discomfort and shortness of breath. If not diagnosed and treated in time, it can develop into advanced lung cancer with brain metastasis, liver metastasis and bone metastasis. The survival period of advanced lung cancer is short and the prognosis is poor, with an average survival period of about six months to one year. The treatment of advanced lung cancer mainly adopts integrated treatment measures such as radiotherapy, chemotherapy, targeted therapy and traditional Chinese medicine.