Right aortic arch is a congenital vascular malformation. During normal embryonic development, the aortic arch should be located on the left side, and when there is an abnormality in development, the right side will develop to form the aortic arch, i.e., right aortic arch. Right-sided aortic arch usually does not cause obvious blood flow abnormality, and most patients do not experience obvious discomfort. If the right-sided aortic arch presses on the trachea and esophagus, symptoms such as difficulty in swallowing, respiratory distress, coughing, fever, and hoarseness may occur. The right aortic arch can also be combined with other malformations, such as ventricular septal defects, pulmonary atresia, and tetralogy of Fallot. Therefore, the presence of right-sided aortic arch should be promptly diagnosed and, if necessary, treated in accordance with medical advice to avoid adverse effects.