Ultrasonic scalpel is a kind of beauty technology based on ultrasound, which is often used for face lift and wrinkle removal. When ultrasonic scalpel is used for treatment, medical equipment can release high-intensity plastic ultrasound. By using the physical characteristics of ultrasound in biological tissues, such as directionality, penetrability, focusing, etc., the target area can penetrate the ultrasound of external energy into normal tissues and accurately focus on the beauty treatment area in vivo, and the tissue cells will produce protein coagulation reaction and pull around around with the freezing point as the center, thus showing the effect of tightening and pulling, making the skin more compact and elastic, and also having a good effect on wrinkle removal.