The best time for a third cesarean section is at full term, i.e. after 37 weeks of gestation, when the fetus is basically developed, but the exact timing of the cesarean section needs to be decided after the prenatal examination. Three cesarean sections are very dangerous for the mother, and the main problem is whether the uterine scar can withstand a third pregnancy. It is generally recommended to consider another pregnancy only after at least two years after the second cesarean with an ultrasound indicating a well healed uterine scar, to avoid three pregnancies leading to pre-rupture or uterine rupture. The more frequent the contractions are, the thinner the lower part of the uterus will be. Therefore, it is difficult to perform three cesarean sections, and you should be hospitalized in time after the full term, regardless of the number of weeks of pregnancy, and the specific operation time should be determined under the advice of the doctor. In conclusion, it is recommended that women who have had three cesarean deliveries should pay attention to regular maternity checks during pregnancy, stay relaxed and actively cooperate with their doctors.