Fetal aortic stenosis does not need to be treated if the symptoms are mild, while more severe symptoms can be treated with valvuloplasty or valve replacement after the birth of the fetus. Fetal aortic stenosis requires regular review of the fetal heart ultrasound to monitor the dynamic changes. If the symptoms are mild, treatment is generally not necessary; if the symptoms are severe, surgical treatment can be performed after the birth of the fetus, such as valvuloplasty or valve replacement. If the fetus is combined with other heart diseases in addition to aortic stenosis, termination of pregnancy can be considered. Avoid exposure to harmful substances during pregnancy, stay away from tobacco and alcohol, so as not to affect the development of the fetus, resulting in deformities or other diseases, and undergo regular obstetric examinations to ensure the normal development of the fetus.