The removal rate of agricultural residues by ultrasonic cleaning machine is as high as 96%. Ultrasonic cleaning is based on the unique physical effect of "cavitation effect" when ultrasonic waves propagate in cleaning liquid media. The "cavitation effect" forms microscopic strong shock waves and high-speed jets to act on the surface of the cleaned object, so that the dirt is quickly crushed and peeled off, and the purpose of high-quality and efficient cleaning is achieved.