The invention relates to the field of shredding machines, in particular to a high-speed potato shredding machine. The high-speed potato shredding machine comprises a machine frame, a control box is arranged on the upper portion of the machine frame, a controller is arranged in the control box, a cutter rest is arranged on the top of the control box, a cutting assembly is arranged on the top of the cutter rest, a material falling barrel is connected to one side of the control box, openings are formed in the top and the bottom of the material falling barrel, a cover plate matched with the upper opening is hinged to the top of the machine frame, a cutting cavity is defined by the cover plate, the cutter rest, a fixing ring and a plurality of cutters, a feeding hopper communicating with the cutting cavity is arranged in the center of the top of the cover plate, a rolling assembly is arranged in the cutting cavity, a driving part for driving the rolling assembly to rotate is arranged at the bottom of the cutter rest, and the driving part, the rolling assembly and the cutting assembly are all located in the material falling barrel. The high-speed potato shredding machine has the advantages of being capable of rapidly cutting potatoes into shreds in batches, very safe to operate and capable of saving time and labor.