PURPOSE: A fixing apparatus for a bone fixation rod is provided to stably fix a rod in operation by installing a clamp having opening on top in which a rod is mounted and combing it with a washer. CONSTITUTION: In a fixing apparatus for a bone fixation rod, a screw(20) has a screw thread(11) thereon and is rotated to be inserted into a bone. A support part(12) is formed in top of the screw and a clamp is mounted in the support part. The top of the support part has a convex side thereon. The clamp has a mounting unit in the screw and a fastening unit in which a rod is combined. The mounting unit and the fastening unit are formed together with in the clamp. The clamp combined with the screw is coupled with a nut.
