Aortic constriction is defined as a limited narrowing of the aorta with a narrowing of the lumen, resulting in reduced blood flow. It occurs mostly confined to the aortic isthmus, but is also associated with tubular dysplasia of the aortic arch. The etiology of aortic constriction is not yet clear, and two theories are generally accepted in the medical community: one believes that the smooth muscle in the middle layer of the arterial duct extends into the aortic wall during embryonic development, and that the stenosis is caused by contraction and fibrosis of the smooth muscle when the duct is closed after birth. The other believes that the aorta circulates in parallel with the left and right ventricles, that the aortic isthmus is separated, and that there is little blood flow through the aortic isthmus during fetal life, resulting in isthmus dysplasia leading to aortic narrowing. Therefore, regardless of the theory on which it is based, the diagnosis of aortic constriction in the fetal period lacks a theoretical basis, and labor cannot be induced because of this diagnosis. At our hospital, 86 cases of aortic constriction were detected at the 2-year follow-up, with a detection rate of 7.04% in precordial disease. There were 35 cases of outpatient consultation at the heart center, and the follow-up results were as follows: 1. 32 cases were completely normal on review after birth; 2. 3 cases of aortic constriction were confirmed after birth, all of which were combined with ventricular septal defects and operated successfully. Fetal diagnosis false positive rate: 92.34%. Other outpatient routes: 50 cases, follow-up results: 1. 31 cases of induced labor! 2. 19 cases of lost follow-up. Health care measures: 1. No special therapeutic care is needed in the fetal period; 2. Normal labor can be awaited without special delivery measures; 3. Cardiac ultrasound examination is performed after birth, and the cardiologist will judge or decide the treatment plan. Treatment: Surgical treatment. Long-term prognosis: Normal life, study and work.