The common vibrating screen can be used for separating multiple kinds powder material with good screening efficiency. But when separating SIC,brown aluminium oxide,white corundum and cobalt powder，etc, the capacity and screening efficiency can not achieve the requirements. Then the ultrasonic vibrating screen can reach the technical requirements.Since ultrasonic vibrating screen are matched with ultrasonic transducer, which can transfer the electric energy with220 V, 50Hz or 110V, 60Hz to high frequency electric energy with 18KHz. Then input the ultrasonic transducer energy and make the high frequency electric energy change to mechanical vibrating. This will solve the friction and blocking issues while separating the fine material, and improve the screening efficiency and capacity. And meanwhile the self-cleaning ability also get promoted well.