The harm factor is reduced after the success of a cesarean section and a second normal birth, mainly because the birth process is more dangerous and there is a risk of causing uterine rupture or hemorrhage. The first birth by cesarean section and the second birth by normal has been successful and requires the doctor to closely observe the bleeding and the uterine contractions of the mother. Since the first child was delivered by cesarean section, a scarred uterus has formed, which may lead to weak uterine contractions after delivery and postpartum hemorrhage. In the process of labor, due to uterine contraction, may lead to uterine rupture caused by the risk of hemorrhage, so the first child cesarean section, the second birth, must be in the local qualified hospitals to try to birth, so as to ensure that in the process of birth of the mother and child safety coefficient. The success of a cesarean section needs to be closely observed by the doctor according to the specific situation and an individual treatment plan should be formulated to avoid jeopardizing the life of the mother and the baby.