When a pregnant woman has a sail-shaped placenta, it is better to have a cesarean section in this case, and a cesarean section is safer. This is because the main fear of sail-shaped placenta is that the placenta is attached to the fetal membranes, which are full of blood vessels, and the blood vessels are connected to the fetus. A pregnant woman in labor first has to break the amniotic fluid, and only after the fluid is broken can the fetus be delivered from the uterus. During the process of rupturing the membranes, if the blood vessels are right at the location of the rupture of the membranes, the rupture of the blood vessels may cause the fetus to lose blood. If the fetus loses 300ml of blood, it is prone to the risk of intrauterine fetal death. However, cesarean section can avoid this situation, because cesarean section can see where the blood vessel grows and can avoid it, and cesarean section surgical delivery labor process is relatively short, the damage to the fetus is relatively small. Sail-shaped placenta C-section is safer, if the delivery will have some risks, mainly because of the fear of rupture of membranes when the blood vessels rupture, resulting in fetal blood loss, causing fetal distress.