Intussusception is the most common emergent disease of acute abdomen in infancy and early childhood which requires prompt diagnosis and treatment under the coopertion of the surgeon, pediatrician, and radiologist. The recent trend of tretment for intussusception is barium reduction. But, in cases of failure of barium reduction, operative reduction is the second procedure. Authors analysed 85 cases of intussusception which were taken barium reduction in the department of radiology of Hanyang University Hospital for the past 4 years. The results were as followings; 1. The mean age of the patients was 8.8 months, and 87.1% of the patients were under the age of 1 year-old. 2. Males were slightly more affected than females as a ratio of 1.3 : 1. 3. The cardinal symptoms and signs were vomiting (94.1%), bloody-mucoid stool (92.9%), irritability (88.2%), palpable mass (75.3%), abdominal distention (42.4%), dehydration (27.1%) in order of frequency. 4. The most common presenting point at barium enema was in the transverse colon with the incidence of 56.5%. 5. The over all reduction rate of barium enema was 62.4%, and this rate was increased in the following cases: 1) The infants between the age of 7-9 months. 2) The patients of early visiting especially in cases of under 6 hour of duration of symptoms. 3) The patients without evident small bowel obstruction in the flat abdomen. 4) The patients with intestinal gas shadows in the right abdomen. 6. Two cases were recurred after barium reduction, and two cases after operative reduction.