Treatment for posterior vaginal wall dilatation usually involves pelvic floor muscle exercises or surgery, with the specific plan to be determined by the severity of the patient’s condition. Posterior vaginal wall dilatation may occur after pregnancy and childbirth, and patients may experience vulvar friction, foreign body sensation, some patients may experience lower back soreness or falling sensation, and those with severe dilatation may have difficulty in defecation. 1. Pelvic floor muscle exercise: If the posterior vaginal wall is mildly dilated, you can do pelvic floor rehabilitation training, do anal lifting exercises, exercise the pelvic floor muscles, and reduce the exercise to increase abdominal pressure, and you can eat fiber-rich food in moderation to prevent constipation from increasing the abdominal pressure and aggravating the condition. 2. Surgery: If the condition is more serious, you need to undergo surgery under the advice of the doctor, regular treatment can make the condition recovered, the surgery mainly includes posterior vaginal wall and perineum repair, hysterectomy, pelvic floor reconstruction and so on. Therefore, patients with posterior vaginal wall dilatation are advised to seek timely medical treatment, complete the relevant examinations, clarify the cause of the disease under the guidance of professional doctors, and actively target treatment.