The principle process of ultrasonic scalpel is to use a special acoustic transmitter to emit high-energy ultrasonic waves released from the skin surface to the bottom of the skin, and then the ultrasonic waves will oscillate back and forth at high speed between target cells, and the skin cells will be destroyed with the increase of temperature. After that, skin cells can repair themselves better by virtue of their own repair ability, which can play the role of lifting the skin as a whole.