The invention relates to a sole shredding device, in particular to an efficient shredding device for discarded shoe soles for the shoe industry. To solve the technical problem, the efficient shredding device for the discarded shoe soles for the shoe industry is provided, wherein the efficient shredding device is high in shredding speed, uniform in shredding and simple in structure. The efficient shredding device for the discarded shoe soles for the shoe industry comprises a first sliding rail, a rack, a first supporting rod, a first connecting rod, a guide plate, an electric push rod, a gear, a pressing block, shredding teeth, a shredding frame, a left frame, a first electric winding wheel, a first sliding block, a bottom plate, a second sliding rail, a pull wire, a second electric winding wheel, a right frame, a top plate, a second connecting rod, a feeding hopper, cutters, a disc-shaped cam, a motor and a second sliding block. By means of the efficient shredding device, the effects that the shredding speed is high, shredding is uniform, and the structure is simple are achieved, the efficient shredding device plays an important role in achieving the good shredding effect, the working efficiency is improved as well, and the safety is high.