Radio frequency technology produces a radio frequency field of 40.68MHZ at a specific depth under the skin in a non-invasive and minimally invasive way, which makes the water molecules in the skin and subcutaneous tissue rotate and vibrate at high speed, thus rapidly heating the tissue. The increase of temperature promotes subcutaneous fat metabolism, stimulates the proliferation and reorganization of collagen and elastic fibers, and achieves the effect of firming skin and reshaping body.