Bone crusher suitable for crushing for dry, fresh large cattle bones, pig bones, sheep bones, donkey bones, and other large animal bones and fish bones, outlet after crushing of 5-8mm. Widely applied to a variety of sausages, ham, luncheon meat, meat ball, quick-frozen foods, salty flavor, bone extract marrow, bone powder, bone colloid, chondroitin, bone soup, bone-extraction, bio-products, instant noodles, puffed food, complex ingredents, food ingredients, pet food and frozen meat category, and other hard materials grinding.