Clinical analysis was made of 120 cases of combined gastric and duodenal ulcer who were diagnosed benign peptic ulcer by gastrofiberscopy in Maryknoll Hospital, during 2 years and 5 months from January 1982 to May 1984. We analysed them in terms of age and sex distribution, clinical symptoms, predilicting site of ulcer, associated diseases, complications and histopathologic findings of ulcer. We got the followings as a result; 1) The sex distribution was 5:1 (Male:Female) and we recognized that male patients predominated in number. 2) The age distribution showed that most of male patients were in 40s while female in 50s. 3) The most predilicting sites of ulcer were the angle site in stomach and bulbar portion in duodenum. 4) Most common symptom was epigastric pain. 5) We found out associated diseases liver cirrhosis, pulmonary tuberculosis, diabetes mellitus, hypertension, renal stone and etc. 6) Complications were, in frequency of order, hemorrhage(70%), pyloric stenosis or obstr- uction(26.7%) and perforation(3.3%). Hemorrhage occurred in duodenum(71.4%) frequently. 7) Histopathologic findings revealed that chronic peptic ulcer(67.9%) was more than chronic gastritis(32.1%) But we could not meet with gastric cancer.