The present invention provides a replaceable bone drilling positioning guide device for dental use, which comprises a base, a guide member, and a positioning block. The base includes a top end, a bottom end, a first outer wall surface, a first inner wall surface, a first guide groove and at least a first groove. The guide member includes a second outer wall surface, a second inner wall surface, a second guide groove, two extension portions, and at least one convex portion. According to this invention, by the design of the at least a first groove and at least a second groove, the guide member will not move along with a drill pipe when the drill pipe is drilling back and forth in the second guide groove of the guide member toward the longitudinal direction of the guide member. Because the distance between the extension portions is smaller than the diameter of the second inner wall surface, the drill pipe is not likely to deviate from the guide groove during the drilling, so as to achieve the effect of increasing drilling stability and precision.本發明提供一種牙醫用可置換式骨骼鑽孔定位導引裝置,其包含一基座、一導引件以及一定位塊。其中基座包含一頂端、一底端、一第一外壁面、一第一內壁面、一第一導引槽以及至少一第一凹溝;導引件包含一第二外壁面、一第二內壁面、一第二導引槽、兩延伸部以及至少一凸部。本發明藉由至少一第一凹溝與至少一第二凹溝的設計,使一鑽桿於導引件的第二導引槽朝導引件長軸方向往覆鑽孔時,導引件並不會隨著鑽桿同時移動;藉由該等延伸部之間的距離係小於第二內壁面的直徑,使鑽桿進行鑽孔時不易偏離導引槽,以達成增加鑽孔穩定度與精準度的功效。10‧‧‧基座20‧‧‧導引件30‧‧‧定位塊
