Road construction roadbed maintenance device and method

The invention discloses a road construction roadbed maintenance device and method.The road construction roadbed maintenance device comprises a sunshade maintenance device and a spraying maintenance part, the sunshade maintenance device is fixedly connected to the tail end of the spraying maintenance part, and the spraying maintenance part comprises a supporting mounting frame, universal wheels, a movable supporting frame, a traction frame, an air pump and a water tank; the universal wheels are evenly and fixedly installed at the bottom ends of the two sides of the movable supporting frame, and the traction frame is fixedly connected to the front end of the movable supporting frame. By arranging the sunshade maintenance device and the spraying maintenance part, the spraying maintenance part can be used for conveniently carrying out water spraying maintenance on the roadbed, geotechnical cloth can be conveniently laid on the roadbed for sunshade maintenance through the sunshade maintenance device, and the spray