Ultrasonic cleaner is an instrument that uses ultrasonic chemical cleaning agents combined with cavitation to clean workpieces. Firstly, the chemical action of the cleaning agent is used to penetrate and dissolve the dirt, and then the impact force generated by ultrasonic cavitation is used to peel off the dirt layer on the surface of the object, stir, disperse, emulsify it, and prevent the dirt that has already detached from the surface of the object from reattaching to the object.