Vesicovaginal fistula is a disease that seriously affects women's physical and mental health and quality of life. Repair of vesicovaginal fistula is an important means of treatment for this disease. Because it conforms to the concept of minimally invasive surgery， has small trauma，quick recovery，no scar，few complications，is easy for patients to accept，can be repeated after failure，and has a short hospital stay，and low medical expenses，it is widely used by gynecologists. The anatomical key points of this operation are： to find the original fistula of the vesicovaginal fistula；to remove the scar around the fistula；to fully free the tissue around the fistula，to suture without tension and to have healthy fistula tissue and good blood supply；to use the centrifugal repair method combined with the centripetal repair method to carry out multi-layer suture of the fistula.