When a woman undergoes a third cesarean section, it is usually recommended before the age of 35. If the mother is over 35, she will recover more slowly and be prone to postpartum hemorrhage. Third-trimester mothers are also prone to complications that are detrimental to postpartum recovery, such as gestational hypertension and gestational diabetes, and multiple cesarean sections increase the likelihood of amniotic fluid embolism during labor. It is generally recommended that a third pregnancy be considered at least 2 years after the second cesarean section when ultrasound suggests that the uterine scar is healing well, to reduce the risk of uterine rupture in a second pregnancy. Before performing a cesarean section, a detailed assessment of the thickness at the scar, confirmation of any abnormalities in fetal heartbeat monitoring, and amniotic fluid is required. The best time to perform a cesarean section for a third pregnancy is around 38 weeks, when the fetus is full term and the fetal lungs are mature enough for the newborn to be resistant after delivery. If some women are less than 37 weeks but have uninterrupted contractions with thin scarred uterus and aging placenta, they should also choose the appropriate time to terminate the pregnancy according to their own situation to avoid the long time causing intrauterine hypoxia of the fetus. Pregnant women should pay attention to maintaining a uniform weight gain, if the uterus enlarges too fast, uterine rupture is likely to occur. Strict and regular maternity checkups should be conducted during pregnancy, and the pregnancy should be terminated promptly once abnormalities are detected.