Fetal right-sided aortic arch is possible if it is simply an abnormality of the vascular alignment, but in combination with other ultrasound abnormalities, it is necessary to consult a medical professional to decide whether or not to abandon the pregnancy. Fetal right-sided aortic arch means that the aortic arch is located on the right side of the esophagus and trachea. In this case, the aortic arch travels backward and to the left and connects with the descending aorta located on the left side of the spine, which may be accompanied by the subclavian artery vagus. In this case, cardiac ultrasonography is recommended. A simple right aortic arch with normal cardiac structure and generally no other problems in the fetus can be considered for preservation. Combined with other ultrasound index abnormalities, such as having more serious congenital heart malformations and chromosomal abnormalities, it is recommended to do further amniocentesis first to determine whether the fetus has any problems, and if the problem is more serious it is recommended to give up. Fetal right aortic arch is not mandatory for pregnant women to retain, according to the individual’s own situation, the development of the fetus to decide, if you have symptoms of physical discomfort, you should go to the hospital in a timely manner, consult the physician’s guidance.