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The utility model relates to a full-automatic sponge disc cutter, which comprises a platform and a main frame, wherein the main frame is connected with a tool holder, and a platform is horizontally placed under the tool holder, the side of the platform is provided with an electric control box controlling the main frame and several motors working on the tool holder, and the main frame is provided with a pneumatic tightening device and an angle adjusting device. By setting the cutting thickness and cutting times on the electric control box, then moving the tool holder to a suitable position, pressing the start on the electric control box to drive the tool belt on the tool holder to operate, the friction driving wheel on the platform drives the table plate to rotate to complete the cutting work. The device improves the working efficiency of cutting sponge sheet, reduces the thickness error of sponge sheet, improves the surface quality of sponge sheet and reduces the working intensity of workers.