Fractional RF Needle system through the special design of many fractional needlepoint array, the high-speed digital motor controls order through the epidermis and the dermis accurate to control the depth of 0.3-3 mm. RF energy can well to penetrate to the dermis, stimulate collagen protein hyperplasia, not only is the best way to improve the scars, but also a long-term tightening skin wrinkles included the good method.