Pelvic Floor Dysfunction (PFD), also known as Pelvic Floor Defeets (PFD) or Relaxation of Pelvic Supports (RPS), manifests itself in disorders such as uterine prolapse and other pelvic organ prolapse (POP) and stress urinary incontinence (SUI). Prolapse (POP) and Stress Urinary incontinence (SUI). With the aging of the population and the improvement of the quality of life requirements, the incidence of PFD has been increasing year by year, and there are about 400,000 pelvic floor reconstruction surgeries in the U.S. in a year, and reconstruction and repair surgeries have accounted for 40-60% of the general gynecological major surgeries. Pelvic floor repair surgery has its complexity and diversity, in recent years, with the deepening of the understanding of the pelvic floor anatomy research, the improvement of surgical instruments and the invention and application of repair materials, pelvic floor repair and reconstruction surgery has made breakthrough progress, and the therapeutic effect is also improving. 1 Anterior pelvic tissue defects Anterior pelvic tissue defects mainly refer to the bulging or prolapse of the anterior vaginal wall, with or without the combination of urethra and bladder bulging. Relaxation of the anterior vaginal wall can occur in the lower part of the vagina, i.e., the distal part of the vesicoureteral ridge, called anterior bladder bulge, or in the upper part of the vagina, i.e., the proximal part of the vesicoureteral ridge, also called posterior bladder bulge. Clinically, both types of bulge are often present at the same time. Anterior bladder bulge is closely associated with stress incontinence, while posterior bladder bulge is true bladder bulge and is not associated with stress incontinence. Severe bladder enlargement can be difficult to urinate and sometimes the enlarged bladder needs to be repositioned to facilitate bladder emptying. Patients with severe bladder enlargement can mask symptoms of stress incontinence and require repositioning of the enlarged tissue to make a definitive diagnosis. It is important to define the exact site of the anatomical defect when choosing a procedure. The surgical procedures available for anterior vaginal wall dilatation without stress incontinence are (1) anterior vaginal wall repair and (2) anterior vaginal wall repair plus patch repair. Anterior vaginal wall dilatation with stress incontinence may be performed by: anterior vaginal wall repair plus midurethral suspension or B u r c h surgery. 2 Midpelvic Tissue Defects Midpelvic tissue defects are characterized by uterine or vaginal vault prolapse as well as intestinal bulging and Douglas fossa hernia formation. In addition to the classic procedures of pubic hysterectomy, shortening of the main sacral ligament, anterior and posterior vaginal wall repair, perineal repair and vaginal closure, the following procedures are now more popular internationally and have been clinically proven to be effective. Traditional post-hysterectomy vaginal vault dilatation is a difficult problem in clinical practice. The incidence of post-hysterectomy vaginal vault dilatation ranges from 2% to 45%, especially in patients with severe uterine prolapse, where the incidence of vaginal vault dilatation after simple hysterectomy is higher. With the increased use of hysterectomy and the prolongation of human life expectancy, the treatment and prevention of vaginal vault dilatation have received more and more attention. 2.1 Posterior IVS (Posterior IVS) The Posterior Intra-viginal Slingplasty (Posterior IVS) was created and reported by Dr. Petros of Australia in 1997, based on the Integraltheory. This is a new procedure for the treatment of vaginal vault dilatation. It is 91% effective in treating vaginal vault prolapse and is also effective in preventing vaginal vault expansion after resection of severe uterine prolapse. The procedure is simple and minimally invasive, and the introduction of the puncture cone with the help of a finger can well avoid the vascular and neural structures, while avoiding squeezing and damaging the rectum. The patient can be discharged from the hospital within 2 4 h. The procedure can also be used in conjunction with the treatment of stress incontinence. It can also be used in conjunction with surgery for stress urinary incontinence to accomplish reconstruction of the female pelvic floor structures. 2.2 Sacrospinous Ligament Fixation (SSLF) is suitable for uterine prolapse with laxity of the main and sacral ligaments. After vaginal hysterectomy, the sciatic and sacrospinous ligaments are reached through an incision in the perineum or the posterior vaginal wall to the rectovaginal space and through the rectal column. Suture fixation of the vaginal stump to this ligament provides better preservation of vaginal function and maintains the horizontal axis of the vagina on the anal-tibial muscle plate with long-lasting and reliable results. This is usually achieved by unilateral SSLF, or bilateral SSLF if the apical tissues of the vagina are wide enough. 2.3 Uterosacral Suspension (Sacrak Colpopexy) The classic uterosacral suspension consists of a mesh that is sutured at each end to the bifid uterosacral ligaments and to the periosteum, the tough fibrous tissue anterior to the sacrum from S2 to S4. Uterosacral suspension raises the uterus to its normal anatomical position, raises the cervix and vaginal apex to a platform on the pelvic floor, and normalizes the vaginal axis. 2.4 Skeletal-caudal myofascial fixation Similar to SSLF, only the fixation point is located on the skeletal-caudal myofascia anterior to the sciatic spine. Some scholars believe that the fixation point here is more accessible and less likely to damage blood vessels and nerves, but the postoperative depth of the vagina may be slightly shorter than that of SSLF. 3 Posterior pelvic tissue defects Mainly refers to rectal bulge and perineal body tissue defects. In recent years, more attention has been paid than in the past to surgical restoration methods for anatomical defects of the posterior pelvis, and it has been recognized that defects of the perineal body or the rectovaginal diaphragm can lead to degradation of the entire pelvic connective tissue system. It has been suggested that when surgery is required for lesions elsewhere in the pelvis, regardless of the degree of combined laxity of the pubic body, it is best to repair it at the same time, so as to facilitate the support of the pelvic floor and the restoration of the normal axis of the vagina. In addition to the classic posterior vaginal wall repair and anorectal muscle reinforcement suture, for severe posterior vaginal wall bulging and recurrence after repair, it is feasible to add the patch of posterior vaginal wall repair. In conclusion. Currently, there are more surgical treatment modalities, according to its surgical path can be divided into transvaginal surgery, transabdominal surgery and laparoscopic route, there is no one surgical modality can be adapted to all patients, should be based on their age, the requirements of the preservation of sexual function, the degree of dilated vaginal wall, the length of the cervix and the lesion, the presence of uterine and adnexal diseases, comorbidities and previous treatment, etc. Comprehensive analysis of the considerations.