The 39 weeks of pregnancy to meet the criteria for cesarean section are scarred uterus, fetal malposition, macrosomia, fetal uterine distress, placenta praevia, multiple pregnancies, etc. need to carry out a cesarean section. 1. Keloid uterus: refers to a history of cesarean section, the uterus has a scar opening, this situation is not recommended for normal delivery, 39 weeks has been full-term cesarean section. 2. Fetal malposition: for example, there is a breech position, fetal transverse position and other phenomena can not be a normal delivery, so 39 weeks can also be a cesarean section. 3. Huge baby: For example, if the doctor evaluates that the baby weighs more than eight pounds, the risk of a normal delivery will be higher, so a cesarean section can also be chosen. 4. Fetal uterine distress: refers to the symptoms of chronic hypoxia in the uterine cavity caused by contaminated amniotic fluid or aging of the placenta in the late stages of pregnancy, this kind of cesarean section should be performed. 5. Placenta praevia: the placenta is located in the anterior wall of the uterus close to the cervical canal, which is likely to cause hemorrhage during delivery, and cesarean section is recommended in this case. 6. Multiple pregnancies: This refers to the fact that if you are pregnant with two or more babies, it is more risky to have a normal delivery, and you can also choose to have a cesarean section. In addition, such as high blood pressure, diabetes and other related diseases during pregnancy, may also need a cesarean section, late pregnancy need to be regular pregnancy checkups, the doctor will be based on the pregnant woman’s own assessment of the situation to determine whether the delivery or cesarean section.