The present invention provides a drill (100) for a pillar, wherein the drill is capable of stably driving a pillar (700) into the ground and improving operation efficiency. The drill (100) for a pillar comprises: a drill pipe body (500) having a hammer unit (501), and a hanging protrusion (502) smaller than the inner diameter of the hollow rod (510) at the lower end thereof； and a pipe-shaped supporting pipe body (600) having one end inserted into the hollow rod (510) of the drill pipe body to be able to ascend along the hollow rod so that one end thereof comes in contact with the hammer unit while the other end thereof has a pillar setting unit (650). In particular, the pillar setting unit (650) comprises: a pillar fixing groove (651) in which one end of the pillar (700) is inserted and set； a device room (640) which is formed in an internal space region of the supporting pipe body to be adjacent to the pillar fixing groove； a first pin hole (641) which is formed to communicate with the pillar fixing groove on the wall of the device room； second pin holes (642a, 642b) which are formed in a direction perpendicular to a central axis direction of the supporting pipe body on the wall of the device room, and communicate with the outside； an elastic member which is fixed to the device room； a first pin member (644) in which one end is inserted into the first pin hole and is formed to protrude toward the pillar fixing groove side； and second pin members (645a, 645b) which are inserted into the second pin hole and have one end protruding to the outside of the second pin hole to be selectively hung on the hanging protrusion of the drill pipe body.본 발명은 지주(700)를 안정적으로 지중에 박아 넣을 수 있고 작업의 효율이 개선된 지주용 타격기(100)를 제공한다.지주용 타격기(100)는, 해머부(501)와, 하단에 중공 로드(510)의 내경보다 작은 걸림 돌기(502)를 구비하는 타격관체(500)와, 상기 타격관체의 중공 로드(510)에 일단이 끼워져 그 일단이 상기 해머부와 접촉할 수 있도록 상기 중공 로드를 따라 승강 이동이 가능하고, 타단은 지주 세팅부(650)를 구비하는 파이프형의 지지관체(600)로 이루어지고, 특히, 상기 지주 세팅부(650)는, 지주(700)의 일단이 삽입되어 세팅되는 지주 고정홈(651)과, 상기
