Usually uterine diverticula appear 3 to 6 months after cesarean section, but there are individual variations. Diverticula are small localized cavities that form during the recovery of the uterine scar after a cesarean section. They usually form around 3 to 6 months after a cesarean section and can be diagnosed by ultrasound or hysteroscopy. Uterine diverticulum can lead to dribbling menstruation and increase the risk of keloid pregnancy and placental implantation. Once detected, it is treated aggressively. Cesarean section is a surgical procedure to terminate pregnancy. During the operation, uterine sutures are made to stop bleeding and restore the anatomical level, and should not be too tight to avoid poor healing of the incision due to poor blood supply to the incision and poor alignment of the tissues. After the operation, you should also pay attention to the observation of vaginal bleeding, and go to the hospital in time if there are abnormalities such as prolonged vaginal bleeding.