Road surface cutting machine for road engineering and use method

According to the road surface cutting machine for road engineering and the using method, by arranging a collecting mechanism and the like, a transmission shaft rotates to drive a driving belt wheel to rotate, the driving belt wheel rotates to drive a second rotating shaft to rotate through a belt and a driven belt wheel, and the second rotating shaft rotates to drive a driving bevel gear to rotate; rotation of the driving bevel gear is achieved through rotation of the driven bevel gear, the fan and the first filter plate, output power of the transmission shaft is utilized, other motor driving is not needed, more convenience is achieved, cost is lower, negative pressure is formed on the inner side of the air inlet through rotation of the fan, and therefore dust is sucked in through the dust collection cover and the air inlet and adheres to the first filter plate, and meanwhile the dust collection effect is better. The first filter plate rotates in the water storage tank, on one hand, the surface of the first f