This is a retrospective review of our experience with endoscopic extraction of 20 cases of foreign body on the upper gastrointestinal tract at sanggye paik hospital from Oct. 1989 to Nov. 1993. Among 20 cases, 3 cases were under 5years of age and 17 cases were over 27years of age. 9 cases (45%) were located in the esophagus, 8 cases (40%) were in the stomach and 3 cases (15%) were in the duodenum. All children (100%) have true foreign body, almost of all adults (82%) have food-related foreign body. Dysphagia with chest pain or vomiting was the most common symptom in the esophageal foreign body. Epigastric pain and vomiting or hematemesis were common symptoms in the stomach or duodenal foreign body, All of the esophageal foreign body (100%) were extracted within 72 hours, most of all (91%) stomach and duodenal foreign body were extracted after 72 hours.