To provide an apparatus for fracturing polycrystalline silicon capable of preventing the generation of fine powder by fracturing the polycrystalline into masses with a desired size by preventing the occlusion of the polycrystalline silicon between fracturing teeth.

In the apparatus 1 for fracturing polycrystalline silicon fracturing the clumped polycrystalline silicon by sandwiching the same between a pair of rolls 3 rotated in a counter direction each other around parallel axes, the rolls 3 are formed by laminating a plurality of disks 31, 32 wherein the fracturing teeth 5 protruding outward in a radial direction are arranged with an interval in a peripheral direction in an axial direction, and by making the rotational frequencies of the adjacent disks 31, 32 different.