Fetal arterial conduit travels in a tortuous manner probably because of the relatively long arterial conduit and large ductus arteriosus, which generally does not affect fetal health as long as the fetus does not have structural or functional developmental abnormalities of the cardiovascular system. The ductus arteriosus is a blood vessel that connects the aorta to the pulmonary artery during fetal life and is generally a normal physiologic structure. When the ductus arteriosus is too long or too large, it may be tortuous, but in most cases, the arterial vascular structure will be normal and close naturally during the growth and development of the baby after birth. However, if the fetal ductus arteriosus has a tortuous course and the blood flow rate at the ductus arteriosus is increased, it is important to consider whether it is caused by constriction of the ductus arteriosus, which may be due to organic disease, such as tricuspid regurgitation, pulmonary atresia, or enlargement of the right atrium or right ventricle. If the ductus arteriosus is tortuous and all other structures are normal, there is no need to treat it. If the fetal ductus arteriosus is combined with other structural abnormalities, it may be due to congenital diseases, which cannot be treated during pregnancy. If the condition is more serious, termination of pregnancy may be an option; if the symptoms are not serious and there is a chance of treatment, surgery may be performed actively after the birth of the fetus.