The present invention relates to a guide for a bone cutting drill, which is configured to guide a bone cutting drill. The guide for a bone cutting drill comprises: a guide main body including a through hole through which a drill shaft of the bone cutting drill passes and an inner insertion hole formed at the rear of the through hole, coaxially positioned with the through hole, and having a diameter expanded as compared with the through hole； an inner including a hollow insertion body which is inserted into the inner insertion hole and includes a drill shaft insertion hole coaxially positioned with the through hole to enable the drill shaft to pass therethrough, a head portion which formed on an end portion of the hollow insertion body to be locked on a proximal end of the guide main body, and a plurality of O-ring fastening grooves formed along an outer periphery of the hollow insertion body； and at least one depth-adjusting washer coupled between the proximal end of the guide main body and the head portion of the inner and having an inner periphery elastically supported by O-rings fastened to the O-ring fastening grooves. According to the present invention, an inner having a hollow insertion body and a head portion is inserted into a guide main body through which a bone cutting drill passes, and a washer elastically supported by O-rings is inserted into an outer periphery of an inner to adjust a cutting depth of a bone so depth errors caused by slipping or abrasion can be prevented by eliminating a slidably moving portion, the operation can be conveniently performed, and a depth can be easily adjusted by selecting the number or thickness of washers.본 발명은 골 절삭용 드릴을 가이드하기 위한 골 절삭용 드릴 가이드에 관한 것으로서, 상기 골 절삭용 드릴의 드릴 축이 관통되는 관통공과, 상기 관통공의 후방으로 상기 관통공과 동축으로 형성되며 상기 관통공에 비해 확장된 구경을 갖는 이너 삽입공을 구비한 가이드 본체； 상기 이너 삽입공에 삽입되며 상기 드릴 축이 관통되도록 상기 관통공과 동축의 드릴 축 삽입공을 구비한 중공형 삽입몸체와, 상기 중공형 삽입몸체의 단부에 형성되며 상기 가이드 본체의 기단부에 걸려지는 헤드부와, 상기 중공형 삽입몸체의 외주연을 따라 형성되는 복수의 오링 체결홈을 포함하는 이너； 및 상기 가이
