Uterine diverticulum refers to one or several sunken spaces in the uterine cavity, congenital abnormalities are rare, mainly acquired uterine incision diverticulum, mostly due to poor repair of the uterus after caesarean section, the specific formation of the medical community is still inconclusive. Uterine diverticulum has a great impact on patients, patients commonly have the following clinical symptoms: 1, abnormal vaginal bleeding, often manifested as continuous dripping bleeding after menstruation. The diverticulum is sunken in the middle, causing menstrual blood to be trapped in the diverticulum, reducing the speed of flow out of the uterus, while sometimes the diverticulum itself is infected and causes inflammatory bleeding; then the diverticulum itself sheds endometrial tissue but at a slow rate, all these factors lead to continuous bleeding; 2. Some patients will have dysmenorrhea and chronic pelvic pain, and some will also be accompanied by lumbago; 3. Infertility: Due to the persistent flow of menstrual blood, which leads to the formation of cervical mucus, affects the transport of sperm, plus the uterus is in a state of chronic inflammation, thus to a certain extent will affect pregnancy; 4. At this time, patients will have clinical symptoms such as weakness, often feeling very tired, general weakness, poor sleep and appetite; Pregnancy should be avoided until diverticulosis is cured. Diverticula can be repaired by hysteroscopic and laparoscopic techniques or by open surgery, but the possibility of diverticula still exists after surgery.