The high frequency screen consists of shaker, pulp distributor, screen frame, rack, suspension springs, screen mesh and other components. The high frequency screen is of high efficiency, small amplitude, and high frequency of screening. Different from the principle of common screening equipments, high frequency screen adopts high-frequency, on the one hand, destroyed the tension of the slurry surface and the high-speed oscillation of fine-grained material in the screen surface, to accelerate the separate role between the large density (specific gravity) of useful minerals and screen mesh, and increase the probability of contact between minerals whose size is less than the separated grain size, and the screen mesh. This is resulting in better separation conditions to make materials smaller than the separation size, to pass through the screen mesh with slurry to be the screened products.