High Intensity Focused Ultrasound (HIFU) penetrates focused and volumetric ultrasonic energy at precise depth (13mm) in subcutaneous fat layers targeting fat tissue causing a non-thermal effect. The surrounding structures such as the epidermis, blood vessels and nerves will not be damaged. Meanwhile the metabolized contents (triglyceride, fatty acid) of cells will excrete outside body automatically through blood circulation and lymphatic drainage without harm to the human body.