Abstract: In order to precisely classify the fine particle,studied the classifying performance of high-frequency electromagnetic fine screen,the effect of different slurry concentration,vibrating time,different size of mesh aperture and amount of spraying water on the classifying result of high-frequency electromagnetic fine screen.The test result show that with the size of the mesh aperture become smaller,the classifying efficiency increased,which is due to the water in material on the screen rapidly reduced,making the wet screening become similar to the dry screening.Only increasing quantity of spraying water not significantly influences the classification effect.To increase the classification efficiency,should continuously make water spraying.