PURPOSE: A handpiece equipped with a cooling unit is provided, which improves precision of the work of handpiece and can discharge heat easily. CONSTITUTION: A handpiece equipped with a cooling unit comprises: covers(20,80) forming the exterior of handpiece; a power generation member(70) generating the torque; a bracket(60) installed at the front side of the power generation member; a driven shaft transferring the torque of the power generation member to a tool; a bushing center(40) covering the driven shaft; a plurality of legs expanded in the direction that the bushing center is installed; a link shaft(50) installed at the rotary shaft of the power generation member; a plurality of wings(51) formed in the exterior of the link shaft; and a leg part(62) of bracket and bushing center.
