Vaginal laxity most often occurs in middle-aged women or after multiple natural births. It is characterized by a wide vaginal opening, or in some cases, the anterior vaginal wall protrudes from the exterior. Both partners do not feel the pleasure of friction during sex and complain a lot. Vaginal laxity is caused by pregnancy or childbirth. Sometimes the lateral perineal incision is made during the delivery of a large fetus, and after delivery the lateral incision is not properly aligned and sutured, resulting in laxity of the external vaginal opening. Even after delivery, the lateral incision is poorly healed or the lateral incision is split, making the external vaginal opening more lax, and in a few cases, the vaginal mucosa protrudes from the external vaginal opening. In some cases, the perineum is completely torn during delivery and part of the anus is also torn, so that not only the vaginal opening and vagina are loose, but also the bowels cannot be controlled. This is medically known as anal incontinence. Vaginal laxity can be corrected surgically by removing part of the mucosa and tightening the muscles inside the vagina, and by tightening the muscles outside the vagina. In case of vulvar tear or anal dilation injury, muscle repair and dilation reconstruction is required. In this way, a satisfactory sexual life and a good shape can be obtained, and the anal dilator muscle can also obtain normal function.