A power tool which linearly drives a detachably coupled tool bit to perform a predetermined operation on a workpiece comprising: a tool body, a driving motor, a motion converting mechanism and a dynamic vibration reducer which are housed in the tool body, and a handle held by a user, the handle connected to the tool body in a tool rear region rearward of the driving motor, wherein: the motion converting mechanism comprises a crankshaft and is adapted to convert rotation of the driving motor into linear motion and transmits it to the tool bit, the dynamic vibration reducer includes a dynamic vibration reducer body, the dynamic vibration reducer body having a housing space, a weight disposed within the housing space of the dynamic vibration reducer body in such a manner as to be linearly movable in the axial direction of the tool bit, and a coil spring that extends between at least one of front and rear surfaces of the weight and the dynamic vibration reducer body in the axial direction of the tool bit to elastically support the weight in the axial direction, wherein the dynamic vibration reducer reduces vibration of the tool body during operation by linear movement of the weight elastically supported by the coil spring in the axial direction of the tool bit, characterized in that the motion converting mechanism is disposed in a tool front region forward of the driving motor in an axial direction of the tool bit, and the dynamic vibration reducer body is disposed in an intermediate region between the motion converting mechanism and the handle, wherein the intermediate region is defined as a region between a crankshaft part and an eccentric pin of the crankshaft and the handle. a tool body, a driving motor, a motion converting mechanism and a dynamic vibration reducer which are housed in the tool body, and a handle held by a user, the handle connected to the tool body in a tool rear region rearward of the driving motor, wherein: the motion converting mechanism comprises a crankshaft and is adapted to convert rotation of the driving motor into linear motion and transmits it to the tool bit, the dynamic vibration reducer includes a dynamic vibration reducer body, the dynamic vibration reducer body having a housing space, a weight disposed within the housing space of the dynamic vibration reducer body in such a manner as to be linearly movable in the axial direction of the tool bit, and a coil spring that extends between at least one of front and rear surfaces of the weight and the dynamic vibration reducer body in the axial direction of the tool bit to elastically support the weight in the axial direction, wherein the dynamic vibration reducer reduces vibration of the tool body during operation by linear movement of the weight elastically supported by the coil spring in the axial direction of the tool bit, characterized in that the motion converting mechanism is disposed in a tool front region forward of the driving motor in an axial direction of the tool bit, and the dynamic vibration reducer body is disposed in an intermediate region between the motion converting mechanism and the handle, wherein the intermediate region is defined as a region between a crankshaft part and an eccentric pin of the crankshaft and the handle. the motion converting mechanism comprises a crankshaft and is adapted to convert rotation of the driving motor into linear motion and transmits it to the tool bit, the dynamic vibration reducer includes a dynamic vibration reducer body, the dynamic vibration reducer body having a housing space, a weight disposed within the housing space of the dynamic vibration reducer body in such a manner as to be linearly movable in the axial direction of the tool bit, and a coil spring that extends between at least one of front and rear surfaces of the weight and the dynamic vibration reducer body in the axial direction of the tool bit to elastically support the weight in the axial direction, wherein the dynamic vibration reducer reduces vibration of the tool body during operation by linear movement of the weight elastically supported by the coil spring in the axial direction of the tool bit, characterized in that the motion converting mechanism is disposed in a tool front region forward of the driving motor in an axial direction of the tool bit, and the dynamic vibration reducer body is disposed in an intermediate region between the motion converting mechanism and the handle, wherein the intermediate region is defined as a region between a crankshaft part and an eccentric pin of the crankshaft and the handle.