Ileus caused by impaction of hardened residual barium stagnated in the colon, a rare complication of barium-enema examination, constitutes a particularly serious problem when it occurs in congenital megacolon patients. The administration of gastrografin in such case has proven efficacy in dissolution of impacted barium refratory to routine means of evacuation. We experienced a case of barium-impaction occurred in 6-months old male who had congenital megacolon. Gastrografin enema was a safe and simple method used in the management of this case.