Fourteen cases of double chambered right ventricle were diagnosed angiographically and of these nine cases were confirmed after operation and atopsy at Seoul National University Hospital in recent four years since 1979. The clinical and radiological findings with the emphasis on the cinecardiographic findings were analysed. The summaries of the analysis are as follows : 1. Among 14 cases, 6 cases were male and 8 cases female. Age distribution was from 4 years to 36 years. 2. In chest X-ray findings, pulmonary vascularity was increased in 8 cases, decreased in 4 cases, and normal in 2 cases. Cardiomegaly was observed in 8 cases and other showed normal heart size. 3. In cinecardiography, 11 cases had interventricular septal defect. Among these 11 cases, VSD located in proximal high pressure chamber was in 2 cases and located in distal low pressue chamber was in 9 cases. 4. The location of aberrant muscle bundle in sinus portion of right ventricule was in 8 cases. In the rest 6 cases, the aberrant muscle bundle was located below the infundibulum of right ventricle. 5. For accurate diagnosis and differential diagnosis with other congenital cardiac anomalies such as Tetralogy of Fallot or isolated pulmonic stenosis, biplane cineangiography and catherterization is an essential procedure.