The Vagina Tightening HIFU System uses an noninvasive ultrasonic focusing technique to focus on the mucous membrane fibrous layer and muscle layer directly. Using ultrasonic waves as the energy source and taking advantage of its penetration and focus, the system will send out ultrasonic energy focusing in the the lamina and muscle fiber layer in a predetermined depth. A higher intensity of ultrasonic region, called focus region, is formed. In 0.1 second, the temperature of the region can reach to above 65 ℃ , so the collagen is reorganized and the normal tissue outside the focal region is undamaged. Therefore, the desired depth layer can obtain the ideal effect of collagen concentration, reorganization and regeneration. Ultimately, the mysterious effect of vagina tightening is achieved.