This prospective study aimed at comparing the advantages and efficiency of laparoscopic versus open appendectomy for appendicular peritonitis. Materials and methods: The study was carried out at the Emergency Department of Binh Dan hospital from the first of Jannuary 2005 to the thirty - first of December 2006, 759 cases of appendicular peritonitis were operated including a group of 384 laparoscopic appendectomy cases and other one of 375 open appendectomy cases.