Firstly, thoracic surgery is the only means to cure lung cancer by surgically removing the lesions in the lung, together with the metastatic lymph nodes. Nowadays, surgical techniques have made great progress compared with those of 20 years ago, and the mortality rate, complication rate and open-chest exploration rate of surgical procedures have all made obvious and revolutionary progress. In particular, the minimally invasive surgery that has been commonly carried out in recent years has greatly reduced the surgical trauma and promoted the early recovery of patients. Second, drug treatment is what the people call chemotherapy. In the past, people were worried about the side effects of chemotherapy, such as nausea, vomiting, declining white blood cells, and lung infections, but now we have good allopathic drugs to make patients not feel nauseous or vomit. Thirdly, radiotherapy is what the people call “baking electricity”. Nowadays, the new generation of radiotherapy machines have higher accuracy, which can target and kill tumor tissues and protect the surrounding normal tissues, and greatly reduce the side effects caused by radiotherapy. After entering the 21st century, there are other treatments, such as gamma knife, X-knife, neutron knife, proton knife, etc. These devices are provided for those lung cancer patients who cannot have surgery or do not want to have surgery, but only if they cannot have surgery, and if they can have surgery, they can still get radical resection through surgery.