36 children operated upon with the diagnosis coarctation of the aorta have been controlled in a follow-up examination. We payed special attention to the surgical technique and brought the results in connection with the method of operation. One group had the stenosis corrected by resection and end-to-end-anastomosis, the second group with plastic operation, either by a longitudinal incision, resection of a diaphragm and transverse closure, or by improving the dilatation using a dacron patch. The results in both groups are satisfactory. Actually we prefer to carry out the resection with end-to-end anastomosis. Plastic correction remains reserved for selected cases. We believe that the high mortality rate in infants can be reduced by operation in hypothermy and by removing the stenosis as completely as possible.