Vaginal laxity after normal delivery is a normal physiological phenomenon, and most women can recover from vaginal laxity after normal delivery in about 3 months. After pregnancy, the uterus gradually enlarges and stretches the muscles and nerves around the vagina, resulting in vaginal laxity, while after vaginal delivery, the pelvic floor muscle tone decreases, the vaginal cavity expands, the vaginal mucosa and surrounding tissues become edematous, and the vaginal mucosal folds decrease or even disappear due to overstretching. The above changes will gradually return during the puerperium, and the mucosal folds usually reappear about 3 weeks after delivery, and the whole puerperium lasts about 6 weeks. In addition, women can do exercises such as anal lifting, yoga and gymnastics to promote the recovery of the elasticity of the vaginal wall muscles.