Objective:To investigate the application of ultra fine drainage tube after single hole thoracoscopy for thoracic surgery.Methods:62 cases of benign non infectious diseases were selected.All patients were treated with single hole thoracoscopic surgery.The chest drainage tube indwelling time,thoracic drainage volume,postoperative pain degree score and postoperative hospital stay were observed.Results:The average hospital stay was(8±5.2)d,and the volume of flow and the degree of pain showed a downward trend.Co...