The principle of the ultrasonic cleaning machine is mainly to convert the sound energy of the power ultrasonic frequency source into mechanical vibration through a transducer, and the ultrasonic wave is radiated to the cleaning liquid in the tank through the cleaning tank wall. Due to the radiation of ultrasonic waves, the microbubbles in the liquid in the tank can maintain vibration under the action of sound waves. Destroying the adsorption of dirt and the surface of the cleaning part, causing fatigue damage of the dirt layer and disconnecting it, the vibration of the gas-type bubbles scrub the solid surface.