Warning board for traffic road construction

The utility model discloses a warning board for traffic road construction in the field of warning boards, which comprises a base, a first support, a second support and a placing box, the base is fixedly provided with the first support and the second support, the rear end of the placing box is fixedly provided with two sliding blocks, and the two sliding blocks are fixedly arranged on the base. Sliding grooves are formed in the positions, corresponding to the sliding blocks, of the first support and the second support, the sliding blocks are connected into the sliding grooves in a sliding mode, a threaded rod is arranged in the second support and penetrates through the sliding blocks, and the bottom end of the threaded rod is rotationally connected into the inner wall of the second support. The warning boards with different identifications can be adjusted and placed according to needs, so that different warning effects are achieved, the applicability of the equipment is further improved, meanwhile, the height