For primary or metastatic lung cancer with contraindication to surgery, CT-guided percutaneous percutaneous radiofrequency ablation or radiofrequency ablation under direct view of TV thoracoscopy can be considered. Especially for multiple nodules and large masses, repeated puncture and long time RF under local anesthesia can hardly be tolerated by patients, and incomplete ablation can affect the effect. 2. The ablation under direct vision is comprehensive and complete, and can be supplemented with surgical clearance or direct vision ablation for mediastinal lymph nodes and tumors close to the mediastinal hilum to obtain near radical effect. Contraindications: 1.Severe failure of important organs; 2.Lung hilar lesions with large cavities; 3.Central lung cancer combined with severe obstructive pneumonia; 4.Lung cancer metastasized to the cervical and thoracic spine, with serious destruction of vertebral body and risk of paraplegia; 5.Diffuse metastatic lesions in the lung. Minimally invasive radiofrequency ablation can cure even middle and late stage lung cancer. Expanded surgical indications, and senior patients are not abandoned.