8 cases of congenital coronary artery fistula of child age group, diagnosed by cineangiography and confirmedby operation at Seoul National University Hospital in recent 9 years were analysed. The summaries are as follows:1. The overal incidence was 0.18% of those who underwent cardiac cineangiography(8/4460). 2. Age distribution wasfrom 3 months to 14 years(mean was 5.6 years). Male to female was 4:4. 3. Important physical findings werecontinuous murmur (7/8) and ischemic change in EKG (3/8). 4. Chest X-ray findings were non-specific but mildcardiomegaly(6/7) and normal pulmonary vascularity (5/7). 5. In cinecardiography, origin of coronary arteryfistula was right in 5 case, left in 1 case and single left coronary artery in 1 case. Draining sites were rightatrium (3), right ventricle(2), pulmonary artery(1) and left ventricle (1). 6. A ssociated anomalies were singlecoronary artery in 1 case, ASD in 1 case and VSD in 1 case. 7. For accurate diagnosis of congenital coronaryartery fistula, bioplane cineangiography is an essential procedure (Root aortography or selective coronaryangiography).