The device uses the 980nm and 1470nm wavelength fiber-coupled laser to treat the needle with a disposable lipolysis fiber,preciselylocates excess fat and fat in the body,directly hits the target tissue fat cells,and rapidly dissolves and liquefies.The instrument mainly acts on deep fat and superficial fat,and transfers the energy directly to the fat cells for uniform heating. During the heating process,the connective tissue and fat cell structure can be changed by controlling the heat,and the adipose tissue has a photothermal effect(so that the fat is dissolved).And the photodynamic effect(separating the fat cellsfrom the normal tissue)decomposes the fat cells to make them evenly liquefied,and the fat liquid is excreted through the ultra-fine positioning needle,which fundamentally reduces the number of fat cells,effectively avoids post operative rebound.