The country has fully implemented the policy that a couple can have two children. However, the excitement is followed by a series of doubts and worries. They are asking themselves whether they are suitable for having another child or not. Can they have a better and safer pregnancy with this “national policy baby”? The first one is the first one to be delivered by Cesarean section. The best age for women to have children and the best interval for the second child is like a flower, the ovaries are the source of nutrients for this flower. 24-29 years old is the time to bloom, after 35 years old ovarian reserve function begins to decline, the flower loses nutrients gradually withered. Therefore, the best age for women to have children is 24-29 years old. A woman is like a flower and her ovaries are the source of nutrients for this flower. 24-29 years old is the time to bloom, after 35 years old the reserve function of the ovaries starts to decline and the flower loses nutrients and gradually withers. Therefore, the best age for a woman to have a baby is between 24 and 29 years old. Women who are over 35 years old when they become pregnant are called advanced maternal age. As the ovarian function of the ovaries gradually deteriorates, the possibility of egg abnormalities increases, resulting in an increased incidence of congenital malformations and demented children. There are also more medical complications that arise during pregnancy than in younger women. In addition, older women are more likely to have premature births and early placental abruptions, and more problems will occur during pregnancy than the average person. The best interval between the second child 1, if the first child is born, there is no strict time limit to have a second child, generally a year after the better. The first one is the first one, and the second one is the second one. The first child is a cesarean section, the second child must be two years apart, otherwise it is easy to cause uterine rupture resulting in fertility risks; 3, for the first child after the mother has been on the ring, it is recommended that the ring is removed within three to seven days after the menstrual period is completely clean, and forbidden to have intercourse within 2 weeks after the ring to avoid infection. Why must there be an interval of 2 years between cesarean delivery and second child? Because the incision of the uterine wall after cesarean delivery is not healing well in the short term, and premature pregnancy, due to the development of the fetus, the uterus is increasing in size and the uterine wall is becoming thinner, especially at the surgical incision, so that the connective tissue lacks elasticity and the fresh scar is easily distended at the end of pregnancy or during delivery, causing abdominal hemorrhage or even threatening life. After cesarean section, it is difficult for the uterine incision to heal “firmly” in a short time. The healing of cesarean incision includes three stages: fiber scar repair, scar maturation and scar mechanization, which takes some time to heal. The maturation of the uterine incision scar starts from 3 months to 6 months after surgery, and scar mechanization takes even longer. The degree of uterine scar muscularization reaches its optimal state 2-3 years after surgery. Therefore, the healing of the uterine incision is better 2-3 years after cesarean section. In case of poorly healed incision it takes longer. Cesarean delivery of second child precautions 1, late pregnancy to prevent abdominal pressure: in order to prevent the occurrence of scar at the crack, must pay attention to protection, can not be squeezed. In late pregnancy, in daily life, travel, walking, etc. to avoid crowding, household chores should be appropriate, sleep should be supine or lateral, sexual life should be restrained to avoid abdominal impact pressure. 2. Early medical consultation for abdominal pain: Some scarred uterus may rupture spontaneously in late pregnancy, and abdominal pain is the main manifestation. As the scar of the uterus heals poorly with the increase of pregnancy months, the intrauterine pressure increases, and the uterus can rupture from its scar without any trigger. When the uterus ruptures, abdominal pain of varying severity can occur, sometimes the abdominal pain is mild but the uterus has ruptured, we must be alert. 3, pay attention to the fetal movement: fetal movement is the fetus in the uterus issued irregular activities, the speed of fetal movement is one of the early manifestations of the fetal safety in the uterus. After a cesarean section, a slight rupture of the scarred uterus and abnormalities of the placenta will lead to fetal death. This is when the fetal heart sounds disappear. The fetal movement slows down or disappears 24 to 48 hours before the fetal death. Therefore, paying attention to the change of fetal movement can detect fetal abnormalities in advance.