A clinical study of 138 cases of patient with peptic ulcer perforations was performed with emphasis on group analysis. The patients were admitted to the Department of General Surgery, College of Medicine, Ewha Womans University, from Jan. 1976 to Dec. 1985. The result were summarized as follow; 1) The most frequent location of perforation was the pylorus(36.7%) of stomach, and then antrum(29.6%) and 1st portion of duodenum were followed. 2) The sex distribution ratio of male and female was 26.6:1. 3) The age distribution was more fregquent in 3rd and 4th decades. 4) The duration of peptic ulcer history was 1-3 years(24.6%), and greater than 5 years was 23.2%. 5) The duration of perforation to operation was more freqent in 12-24 hours(40.6%). 6) As the operative procedures, simple closure was performed in 108 cases(78.3%) and subtotal gastrectomy in 29 cases(21.0%). 7) Associated diseases were pulmonary Tbc, hypertension and pneumonia. 8) The postoperative complications not significant difference between resection group and non-resection group of perforation. 9) The late complication were noted in 5.0% and pyloric obstruction and ulcer intractibility and reperforation were noted. 10) There was no case of death.