There are many used techniques: hand sewing or stapled bullectomy, endoloop bulla ligation, eliminating bullae by electrocoagulation... However, the most used techniques of them are hand sewing and stapled bullectomy. Methods: prospective cohort. Results: A series of 61 patients with primary spontaneous pneumothorax, including 25 patients were performed stapled bullectomy (Group 1) at University Medical Center HCM city and 36 patients were performed hand sewing bullectomy at Cho Ray hospital from 01/2007 to 01/2008.