There is no optimal time for cesarean section for placenta praevia, cesarean section should be chosen according to the individual situation of the pregnant woman, if it is an emergency cesarean section, it is not possible to choose the time, if it is an elective cesarean section, the time of cesarean section should be chosen according to the situation of placenta praevia. If there is heavy bleeding during pregnancy or shock, fetal distress, placenta praevia bleeding, and the delivery is not possible in a short time, emergency surgery should be performed, in this case, it is not possible to choose the time, and it should be handled in time to reduce the risk. If the pregnancy is favorable, the decision to deliver by elective caesarean section is based on the type of placenta previa and the size of the gestational week. Surgery is performed at 36 weeks of gestation and above in cases of combined placental implantation, at 37 weeks of gestation and above in cases of complete placenta previa, and can be expected after 38 weeks in cases of borderline placenta previa. Do your regular pregnancy checkups after pregnancy and let your professional doctor determine the time for cesarean section.