Marking device for road construction

The utility model provides a marking device for road construction, a material storage device comprises a box body, a partition plate is arranged in the box body, the interior of the box body is divided into a first material storage bin and a second material storage bin through the partition plate, and piston pressurizing assemblies are arranged in the first material storage bin and the second material storage bin. The piston pressurizing assembly comprises pressing discs and telescopic columns, one end of an output shaft of each telescopic column is connected with the corresponding pressing disc, the end, away from the corresponding pressing disc, of each telescopic column penetrates through a top plate of the box body, and the outer edge of each pressing disc is attached to the side wall of the partition plate and the inner side wall of the box body. The rotating device comprises a rotating bearing and fixing locks, the bottom of the rotating bearing is fixed to the platform car through welding, the inner si