Thank you for your trust in me and the Department of Obstetrics and Gynecology of Beijing Friendship Hospital, Capital Medical University, to treat cesarean hysterectomy scar diverticulum. If you have already completed the MRI in a foreign hospital, please bring the image film, or better yet, a CD with the data for our reference; 3. There may be a small amount of bloody discharge or leucorrhea in the vagina within one month after the operation, which is the exudation from the incision suture. 5. For all patients, hysteroscopy will be performed at the time of surgery to observe and locate the location and size of the diverticulum, and to exclude endometrial lesions. 6, 1 month, 3 months and 6 months after the operation, to our clinic review, to understand the diverticulum repair incision healing, ultrasound examination of diverticulum healing; 6 months, to carry out nuclear magnetic examination to understand the diverticulum healing situation. 7. Please cooperate with our follow-up visit, we only know the healing situation after diverticulum repair, we will not disclose the patient’s privacy, thank you for your cooperation.