Whether or not a cesarean section scar of 2.2 millimeters can lead to a normal delivery depends mainly on the strength of uterine contractions during labor, the size of the fetus, and the dilatation of the cervix. If the fetus is not too big and the uterus contracts well during labor and the cervix dilates quickly, the delivery can be normal, otherwise, the possibility of a normal delivery is relatively low. A first-trimester cesarean section scar of 2.2 millimeters, the uterus enlarges more significantly when the pregnancy reaches full term, potentially leading to stretching and thinning of the scarred area. After entering labor, with the uterine contractions, if the cervical opening is not well dilated, the uterine tonic contractions will cause uterine rupture at the scar, endangering the life of the mother and child, so this situation requires immediate cesarean section. The fetus is not very large in the pre-delivery examination, and the labor process is smooth, the cervical opening dilates relatively quickly, this situation may be a normal delivery. Since the risk of a normal delivery after a previous cesarean section still exists, many medical institutions still recommend another cesarean section to ensure the safety of the mother and child.