SummaryThe angiocardiography is one of the most interesting improvements of modern cardiology. This method is particularly useful in the study of congenital heart disease. In such cases it should always be used to complete the data obtained by other methods of cardiac investigation (catheterization, measurement of the pressures in the cardiac chambers and in the pulmonary artery, exercise test etc.).In the case of Fallot disease, it enables us to locate the malformations exactly, to know just the reciprocal position of the aorta and the pulmonary artery, to determine precisely their size and to visualize the sub-clavian arteries. These findings enable us to decide as to the advisibility of a surgical operation of this heart condition.The angiocardiography also gives us important data for the diagnosis of inter-auricular septal defect, patent ductus arteriosus, tricuspid atresia, coarctation of the aorta, and so on.The authors report some observations from their collection showing the interest of this new method of investigation.