Ultrasonic cleaning is the most widely used type of power ultrasound, and its working principle is ultrasonic cavitation effect . The ultrasonic cavitation effect refers to the vibration of microbubbles (cavitation nuclei) existing in a liquid under the periodic action of ultrasonic waves. When the sound pressure reaches a certain value, the bubbles rapidly increase in size and then suddenly close. At the moment of bubble closure, shock waves and high temperatures are generated, which break down insoluble substances and cause them to disperse in the cleaning liquid, thereby achieving the purpose of cleaning by ultrasonic waves.