Bone grinding device

The utility model discloses a bone grinding device. The device comprises a first supporting plate and a second supporting plate which are hinged, the second supporting plate is used for bearing a thick bone; the first supporting plate is provided with a bone biting tool used for cutting and grinding the coarse bone. The bone biting cutter is provided with a forming hole, and when the first supporting plate can rotate to be roughly attached to the second supporting plate, the bone biting cutter tightly presses the thick bone substance of the second supporting plate till the thick bone substanceis cut and ground into thin bones and the thin bones are formed in the forming hole. The first supporting plate is matched with the second supporting plate; the coarse bone is cut and ground into fine bone with the required particle size by using a bone biting cutter; a plurality of thick bones can be synchronously treated, time and labor are saved, the bone biting efficiency in an operation is improved, in addition, the