The main reason for the formation of right aortic arch u-shaped vascular ring may be caused by adverse stimuli during fetal development, which is a congenital developmental abnormality. Right aortic arch u-shaped vascular ring refers to the aortic arch on the right side of the trachea and esophagus, the left subclavian artery conduit and the left subclavian artery will move along the esophagus after the left, forming a vascular ring, compression of the trachea and esophagus, which can be found during the four-dimensional ultrasound, suggesting that the fetus suffers from congenital heart disease, should be further diagnosed under the advice of the doctor to clarify the condition, and then actively treated. Right aortic arch u-shaped vascular ring formation causes, usually due to the fetus in the process of development by some adverse stimuli resulting in congenital developmental malformations, the fetus after birth may gradually appear respiratory difficulties, shortness of breath, recurrent respiratory infections, feeding difficulties and other symptoms, to be actively under the guidance of the doctor for treatment. When the right position aortic arch u-shaped vascular ring is detected, the treatment should be standardized under the guidance of the doctor.