The present invention relates to a bone cutting depth measuring device for measuring the depth of bone cutting, inserted into the bone cutting site, the tip is formed to abut against the bottom surface of the bone cutting site, and the proximal end is an indicator to form an insertion joint； An insertion hole is provided in the front to accommodate the insertion coupling portion of the indicator, a thread is formed in a direction orthogonal to the insertion hole, and has a first tab portion communicating with the insertion hole, spaced apart from the rear of the first tab portion A scale bar having a second tab portion on which threads are formed, and a scale display portion indicating a cutting depth behind the second tab portion； A body accommodating the indicator and the scale bar in a through hole formed along a central axis in the longitudinal direction, and a body having a long hole along the longitudinal direction on one side of the outer circumferential surface； A body finishing cap coupled to the front of the body and configured to allow the indicator to be inserted； A fixing bolt coupled to the first tab portion to fix the indicator with respect to the scale bar； And a guide bolt having a head portion having a larger diameter than the width of the long hole, and coupled to the second tab portion with the long hole therebetween. According to the present invention, it is possible to replace and use only some parts when the indicator is damaged by constructing an indicator inserted into the bone cutting area and contacting the bottom surface of the cutting area with respect to the scale bar, and it is easy to assemble and to operate the user. And an effect capable of improving gripping properties.본 발명은 골 절삭 깊이를 측정하기 위한 골 절삭 깊이 측정장치에 관한 것으로서, 골 절삭 부위에 삽입되며 선단부는 골 절삭 부위의 바닥면에 맞닿도록 형성되며 기단부는 삽입 결합부를 형성하는 인디케이터； 상기 인디케이터의 상기 삽입 결합부를 수용하도록 전방에 삽입공이 구비되며, 상기 삽입공에 직교하는 방향으로 나사산이 형성되어 상기 삽입공과 연통되는 제1 탭부를 구비하며, 상기 제1 탭부의 후방으로 이격되며 몸체 내측으로 나사산이 형성되는 제2 탭부를 구비하며, 상기 제2
