In tne intestinal perforation during hydrostatic reduction for intussusception, the diluted isotonicGastrografin may prevent body fluid shifting to peritoneal space, and granulomatous reaction resulting tointestinal obstruction, which can be induced by Barium on the peritoneal surface. We have experienced twoperforations from 563 Gastrografin reductions during the last five years. One of the perforated cases had nocomplication on one year follow up after ileocecectomy, but the other, who was in the state of shock before thereduction, died at 133rd day after the operation. The cause of death was aspiration during the feeding. We reportthe above two cases of intestinal perforation by Gastrografin reduction without evidence of fatal complication.