 The study is aimed to evaluate the efficacy and safety of ENB guided RFA for the treatment of patients with early-stage non-small cell lung cancer NSCLC. The study is designed as a single-center prospective trial with one arm. The participating centers are Department of pulmonary medicine and endoscopy, Shanghai Chest Hospital affiliated to Shanghai Jiao Tong University, China. Patients diagnosed with early-stage NSCLC will be enrolled into the study. Fifty patients are expected to be enrolled totally. 