Uterine incision diverticulum is caused by cesarean section: First, the cesarean incision is mostly located in the lower part of the uterine body, and it is easy to have the edge of the uterine body and the edge of the cervix in the process of suturing, thus causing uterine diverticulum. Secondly, during the suturing process of caesarean section, if the suturing method is incorrect, it is also easy to cause the formation of uterine diverticulum. The way of surgical suturing mainly includes interrupted suturing and continuous suturing, continuous suturing is likely to cause problems in the blood circulation of maternal uterine tissues, resulting in a situation that is not conducive to healing of the incision is most likely to diverticulum. In addition, incomplete disinfection during surgery or lack of hygiene after surgery can also affect the healing of the incision and make it easier for diverticula to appear.