An osteotomy guiding member includes a guiding base plate, a guiding side plate and an arc supporting plate. The guiding base plate has a first side, a second side, a third side and a depth direction. The second side is connected with the first side and the third side, and the second side is roughly parallel to the depth direction. The guiding side plate is connected with the second side of the guiding base plate and is clamped with the guiding base plate at an angle. The bottom surface of the guiding base plate and the guiding side plate The arc butting plate is connected with the third side of the guide base plate, and the arc butting plate has an arc butting surface.The osteotomy guiding component can help to locate the desired cutting surface and make the cutting position accurate.一種截骨術導引構件，其包含：導引基板、導引側板及弧形抵靠板，導引基板具有第一側、第二側、第三側及深度方向，第二側連接第一側及第三側，第二側大致平行深度方向，導引側板連接導引基板的第二側且與導引基板夾有一角度，導引基板的底面及導引側板的側面提供一切割導引道，弧形抵靠板連接導引基板的第三側，弧形抵靠板具有一弧形抵靠面。藉由本創作的截骨術導引構件，可輔助定位欲切割面，使手術切割位置精準。
