There are many hazards of diverticulum of the uterine incision, as follows: 1. It will lead to longer menstrual bleeding, and the phenomenon of dripping malaria, and it will be easier to cause infection in a short period of time; 2. After another pregnancy, it will affect the fertilized egg’s implantation and increase the possibility of implantation of the uterine incision, pregnancy of the uterine incision and rupture of the incision, which will lead to serious hemorrhage. This phenomenon is mainly a sequelae of cesarean section surgery, and women who have had a cesarean section are advised not to prepare for pregnancy and childbirth in the short term, otherwise it will be more likely to aggravate the possibility of diverticulum of the uterine incision, which will be more harmful to health. To prevent this phenomenon from occurring, women who have had a cesarean section should be reviewed promptly after 42 days.