Thoracoscopic sympathectomy is the highly effective treament. The aim of this study: Assessing capacity of Thoracoscopic sympathectomy in patients anaesthetized with single-lumen Endotracheal tube. Methods: Descriptive study; At Nhan Dan Gia Dinh Hospital from 01/2009 to 10/2010Results: A series of 16 Hyperhidrosis patients were performed thoracoscopic sympathectomy.