Abstract: Objective: To evaluate the value of CT angiography (CTA) in the diagnosis and follow-up of coarctation of the aorta. Methods: A retrospective analysis of 17 patients with coarctation of the aorta was performed, 6 patients underwent follow-up CT following bypass graft surgery. Results: Of 17 patients diagnosed as aortic coarctation, 10 patients were males, 7 were females. Eight cases were next to the ductus arteriosus, 4 cases before the catheter, 5 cases of in the catheter. Five patients underwent surgical bypass graft surgery, 1 case with vascular replacement surgery and 1 case with balloon angioplasty, 3 cases were associated with other malformations, including double superior vena cava (n=l), patent ductus arteriosus (n= 1), anomalous pulmonary venous drainage (n = 1). Significant collateral vessels were observed in all patients, including the enlarged bronchial arteries, intercostals arteries and internal thoracic arteries. The bypasses of 5 operated-patients were patent. Conclusions: CTA can reliably diagnose aorta coarctation, show collateral vessels, and play a very important role in the postoperative follow-up.