Road and bridge ruling machine and using method thereof

The invention discloses a road and bridge ruling machine and a using method thereof. The road and bridge ruling machine comprises a bottom plate, a storage tank, a compression pump and a ruling device are fixed to the bottom plate, the compression pump comprises a suction end and an output end, the suction end of the compression pump is connected with the storage tank, the ruling device comprises a ruling wheel, a U-shaped frame and a supporting rod fixed to the U-shaped frame, the ruling wheel is rotationally connected with the U-shaped frame, input pipes are arranged on the ruling wheel, a penetrating groove allowing the supporting rod to penetrate through is formed in the bottom plate, the supporting rod can move up and down and horizontally in the penetrating groove, a threaded hole communicating with the penetrating groove is formed in the side wall of the bottom plate, a limiting bolt is in threaded connection with the interior of the threaded hole, a fixed guide pipe is fixed to the lower portion of th