The Vagina Tightening HIFU System uses an noninvasive ultrasonic focusing technique to directly focus on the mucosal lamia and muscle layer. Using ultrasonic waves as the energy source and taking advantage of its penetration and facility, the system will send out ultrasonic energy focusing in the lamina propriety 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°C, 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 contrition, reorganization and regeneration. Ultimately, the mysterious effect of vagina tightening is achieved.