Radiologic findings of Total colonic Aganglionosis(T.C.A.) were analized in 15 patients with the results asfollows; 1. Male to female ratio was 8:7. 2. There were six cases of small calibered colon, seven cases of normalcolon and two cases of megacolon. 3. Free reflux of barium into the small bowel was observed in seven cases out ofeight in which retrograde filling was tried. 3. Delayed films (24 hrs or more) were available in eight cases andmost of the barium remaned in bowel in six cases. 5. There were abnormal colonic contractions in three cases,decreased redundancy in five and five cases of irregular, hypertrophic mucosal wall suggesting enterocolitis. 6.Part of ileum were also aganglionic in five cases. There seems to be no pathognomonic barium enema findings inT.C.A. But combination of these findings may suggest the possibility of T.C.A. T.C.A. should be considered indifferential diagnosis of bowel obstruction in infants. Barium enema should be complete and delayed films alwaysbe obtained.