The thickness of the lower anterior wall of the uterus changes at different times. For women of normal reproductive age, the normal thickness is about 3 mm, and after pregnancy, as the uterus increases, the myometrial tissue gradually elongates and thins to a thickness of about 2 mm. In late pregnancy, the thickness will become significantly thinner, reaching a maximum of about 1mm. In late pregnancy, surgery can be performed on the thinnest part of the lower part of the anterior uterine wall, which can reduce the damage caused to the uterus during surgery, reduce the damage caused to the surrounding tissues, reduce bleeding, prevent heavy bleeding, and provide strong conditions for the delivery of the fetus. During pregnancy, the pregnant woman should be closely monitored for severe abdominal pain, which can easily lead to uterine rupture when the muscle layer of the lower anterior wall of the uterus is subjected to excessive contraction pressure.