Provided is a diamond drill used for construction of an electric power site. Therefore, precise drilling is achieved and service lifetime of the diamond drill is prolonged. The diamond drill comprisesa diamond drill body and is characterized in that the diamond drill also comprises a base, a frame, a lifting arm, a vertical board and diamond drill clamping seats; the bottom of the base is equipped with walking wheels; the frame is arranged above the base; a first swing mechanism, driving the frame to swing within a vertical surface relative to the base, is arranged between the base and the frame; the lifting arm is slidably installed on the frame; the frame is provided with an elevating mechanism used for driving the lifting arm to move up and down within the vertical surface; a verticalboard is slidably installed on the lifting arm; the lifting arm is provided with a translation mechanism used for driving the vertical board to move leftward and rightward within a horizontal surface;the vertical board is vertically fixed with a flat board; the diamond drill clamping seats are arranged on the flat board at intervals; and a second swing mechanism is arranged between the vertical board and the flat board and used for driving the diamond drill clamping seats to swing within the horizontal surface. With the diamond drill used for construction of the electric power site, punchingoperation can be precisely achieved.