Recently, a survey report by the World Health Organization showed that China has the highest cesarean delivery rate in the world, over 46%. What is more surprising is that some experts point out that in fact, the cesarean delivery rate in China is even higher than the survey result, which can reach at least 50%, and the cesarean delivery rate in some hospitals even reaches 50-70%, of which at least 25% of pregnant women do not need to use cesarean delivery. In recent years, it has been found clinically that various diseases caused by cesarean delivery are increasing. Some women with a history of cesarean delivery experience prolonged menstrual periods or irregular vaginal bleeding, and long-term medication to regulate menstruation is not effective, which is often caused by cesarean scar defects. Symptoms of cesarean scar defect: Cesarean scar defect refers to the formation of depression due to incision separation after lower uterine cesarean section due to poor incision healing, menstrual blood may accumulate in the depression, and the lower edge of the incision prevents the outflow of menstrual blood in the depression due to the action of live flap, and the patient experiences prolonged menstruation, intermenstrual bleeding, dysmenorrhea, infertility and other symptoms; at the same time, the regenerated endometrium in the depression may not develop synchronously with the endometrium of the uterine cavity It may also lead to irregular vaginal bleeding. How to treat uterine scarring: At present, the most important treatment options for uterine scarring defects are hysteroscopic surgery and transvaginal surgery, while medication does not have any definite effect. Hysteroscopic surgery is to check the presence of a flap at the defect through a hysteroscope, and if it exists, to remove it through minimally invasive surgery; transvaginal surgery removes the scar first and then re-sews the wound to make the depression at the original scar disappear. “This means that the embryo stays in the scar to find a bed, which can easily lead to uterine rupture and bleeding. If women after cesarean delivery have irregular menstruation and other conditions, they should not blindly take drugs to regulate menstruation, but should have a systematic and comprehensive examination, and if there are uterine scar defects they should be treated immediately and symptomatically. Patients with post-cesarean delivery who become pregnant again should have an ultrasound examination as soon as possible to understand the embryo’s bed location, prevent pregnancy at the scar site, and deal with it early to avoid possible future uterine rupture and hemorrhage.