When a woman has a third cesarean section, it is usually recommended before the age of 35. If you are over 35 years old, the woman recovers more slowly and is prone to postpartum hemorrhage. Third-time mothers are also prone to complications that are detrimental to postpartum recovery, such as gestational hypertension and gestational diabetes, and multiple cesarean deliveries increase the likelihood of amniotic fluid embolism during labor. It is generally recommended that at least 2 years after the second cesarean section, when ultrasound indicates good healing of the uterine scar, a third pregnancy can be considered to reduce the risk of uterine rupture in another pregnancy. Before performing a cesarean section, a detailed assessment of the thickness of the scar, confirmation of any abnormalities in fetal heart monitoring, and the condition of the amniotic fluid are needed. The best time to deliver a third child by cesarean section is around 38 weeks, when the fetus is full term and the fetal lungs have matured and the newborn is 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 their pregnancy according to their condition to avoid long time causing intrauterine oxygen deprivation to the fetus. Pregnant women should pay attention to maintain a uniform weight gain, if the uterus increases too quickly, uterine rupture can easily occur. Strict regular maternity checkups should be performed during pregnancy, and the pregnancy should be terminated in time once abnormalities are detected.