Objective: To explore the effect of thoracoscope on lung cancer. Methods: 40 cases of lung cancer patients,twenty- four male cases,16 cases female. Aged 27 to 78 years old,50 cases as control. Results: Operation time of two groups had no difference( P > 0. 05). Intraoperative blood loss,postoperative chest flow and drainage tube drawing time and the average hospitalization time were different( all P < 0. 05). Number of lymph node cleaning:Cleaning 13. 5 ± 2. 4 a thoracoscope group,cleaning thoracotomy group...