The invention relates to a device used for producing schist similar materials. The device comprises a mould without an upper cover, wherein a blanking device is arranged on the mould, and comprises an even number of vertical sliding rails, transverse sliding rails and a blanking trough, wherein the vertical sliding rails are vertically and symmetrically arranged above a pair of opposite side walls of the mould, each vertical sliding rail is provided with a vertical sliding block, two ends of the transverse sliding rail are fixedly connected with the two vertical sliding blocks respectively, the transverse sliding rail is provided with a transverse sliding block, the transverse sliding block is fixedly connected above the blanking trough by a connecting rod, the length of the blanking trough is not greater than the length of the inner edge of the mould perpendicular to the transverse sliding rail, and two side edges of a discharging hole of the blanking trough are respectively provided with a scraping plate which is turned up outwards and upwards. The device provided by the invention is simple in structure and convenient to assemble, can precisely control the thickness and evenness of each layer, and can control the arrangement direction of flaky materials to simulate the structural characteristics of schist, so as to produce experimental materials with structure and constitution similar to those of the schist, and provide the materials with high similarity for experimental research.