Compared with other kinds of cleaning methods, ultrasonic cleaning machine has shown great advantages. Especially in the specialized, collectivized production enterprises, has gradually replaced the traditional dip washing, scrub washing, pressure washing, vibration cleaning and steam cleaning with ultrasonic cleaning machine. The high efficiency and high cleanliness of ultrasonic cleaning machine benefit from the penetration and cavitation shock wave generated when the sound wave propagates in the medium. So it is easy to clean the parts with complex shape, cavity and fine empty, for general oil removal, rust prevention, phosphating and other processes, under the action of ultrasonic only two or three minutes can be completed, its speed than the traditional method can be increased several times to dozens of times, cleanliness can also reach high standards, which in many of the product surface quality and productivity requirements of the occasion, Results that are difficult to achieve or irreplaceable with other processing methods are highlighted.