Common indications for radiofrequency ablation of lung cancer (CT-guided percutaneous percutaneous radiofrequency ablation or TV thoracoscopic direct view radiofrequency ablation): 1. But the metastasis is not extensive, there is no malignant mass, the patient is in good condition or the metastases can also be treated by radiofrequency ablation. At this time, if the patient agrees to active treatment, radiofrequency ablation can be used to treat lung or other metastases, together with systemic chemotherapy to achieve comprehensive treatment. 2.Common indications for radiofrequency ablation under direct TV thoracoscopy include: 1.The mass is large or in a special location, and it is estimated that it is difficult to be removed surgically, but due to the large mass and the need for repeated puncture at multiple points and long time radiofrequency, it is estimated that it is difficult for patients to tolerate percutaneous radiofrequency ablation under local anesthesia, or it is more difficult to puncture because of the distance from the lung door or heart, at this time the indications can be expanded for thoracoscopic exploration. If the tumor can not be removed, or can be removed but can tolerate general anesthesia due to the patient’s advanced age or other cardiopulmonary diseases, but it is risky to perform thoracotomy and lobectomy or total lung resection, radiofrequency ablation can be performed under direct intraoperative vision. 2, according to the size or location of the mass, it is estimated that there is no difficulty in surgical resection, but the patient is of advanced age or has other cardiopulmonary disorders, can tolerate general anesthesia, but there is a risk of performing thoracotomy and lobectomy for radical treatment. If the nature of the lesion is difficult to be determined by non-surgical methods and a thoracoscopic biopsy is needed, thoracoscopic radiofrequency ablation under direct vision can be performed after the biopsy is characterized. 3.Pleural implantation with uncontrollable pleural effusion can be performed under thoracoscopic pleural debridement plus radiofrequency ablation of the mass, followed by postoperative chemotherapy. 4, Bilateral multiple metastatic nodules can be performed under thoracoscopic assistance with bilateral simultaneous multi-nodule radiofrequency ablation to control disease progression. 5.Patients who are very afraid of and refuse large chest incision as well as lobectomy, and do not want to perform percutaneous percutaneous radiofrequency ablation in the awake state, can perform radiofrequency ablation under direct thoracoscopic view and simultaneous mediastinal and hilar lymph node removal.