PURPOSE: A plate for fixing a mandible is provided to place a jaw joint on a stable ideal position before synostosis through jaw movement of a patient for oneself by connecting a mandibular proximal segment to a mandibular body which is a mandibular centrifugal segment in a semi-fixed state. CONSTITUTION: First and second fixing ring parts(20,30) constitute a plate body(10). First and second fixing ring parts and a movable ring part(40) are interconnected by a connection part(50). A screw(60) passes through the first and second fixing ring parts. A taper surface is formed on an internal upper circumferential surface of first and second through holes in first and second fixing ring part. A head part of a screw(70) attaches an upper surface of the movable ring part.
