A bone drilling cover fixing device, comprising an upper pressing piece and a lower pressing piece, the upper pressing piece comprises a first base part and a first joint part arranged on the first base part, the first joint part The bottom surface of the first base protrudes so as to extend into the borehole, and the lower pressing member includes a second base and a second joint part provided on the second base, the second base includes equal lengths At least one first arm and at least one second arm, the lengths of the first and second arms are greater than the radius of the borehole, and can be placed obliquely to the bottom of the borehole and span the two ends, the first The two joints can be combined with the first joint, so that the movement caused by the clearance between the first joint and the drill hole is not enough to disengage either of the first and second arms from the drill hole The bottom side, so that it can greatly improve the scope and performance.一種骨骼鑽孔蓋固定裝置，包括一上迫緊件及一下迫緊件，該上迫緊件包含一第一基部及設於該第一基部上之一第一結合部，該第一結合部凸伸出該第一基部之底面使可供伸入鑽孔中，該下迫緊件包含一第二基部及設於該第二基部上之一第二結合部，該第二基部包含等長之至少一第一臂及至少一第二臂，該第一、二臂的長度皆大於鑽孔之半徑，且可供斜向置入至鑽孔的底側而橫跨於兩端，該第二結合部可供與該第一結合部結合，使該第一結合部與該鑽孔之間的餘隙所產生的移動不足以使該第一、二臂之其中任一者脫離鑽孔的底側邊，藉此以使其可大幅提昇適用範圍及效能。
