Ultrasonic therapeutic instrument refers to sound waves with a frequency of more than 20 KHZ, which send low intensity and high frequency pulse ultrasonic waves to the affected area to produce mechanical vibration, so as to promote tissue repair and regeneration. It has the advantages of safety, non-invasiveness and no side effects. Ultrasonic therapeutic apparatus with warm, mechanical, physical and chemical effect, can improve the biological membrane permeability, accelerate metabolism, improve tissue nutrition, improve the rate of protein synthesis, improve regeneration function, etc., can promote the blood circulation, wound healing and relieve fatigue muscles and ligaments, widely used in the treatment of soft tissue injuries such as bones, muscles and joints and rehabilitation.