Purpose : This study was conducted to evaluate success and perforation rates of pneumatic reduction and to find the predictors of reduction failure.Materials and Methods : We reviewed 224 cases of pediatric intussusception diagnosed by air-enema between July, 1989 and June, 1992. The mean age was 9.8 months(range, 1 month to 3 years). Logistic regression analysis was used to find predictors of reduction failure.Results : Successful reduction was achieved in 197 cases(87.9% of success rate). Bowel perforation occurred in two cases(0.9% of perforation rate). There were two statistically significant predictors of failure ; (1)ileoileocolic intussusception(p (.001), (2) long duration of symptom(p(.001). Surgery was performed in 26 cases(11.6%), of which seven required bowel resection.Conclusion : Pneumatic reduction is a useful means in the management of pediatric intussusception with a high success rate and no mortality.