Prefabricated wallboard pouring auxiliary tool

The utility model relates to the field of wallboard production devices, and provides a prefabricated wallboard pouring auxiliary tool which comprises a baffle, a plurality of blocking pieces are arranged at the lower end of the baffle, a first sliding groove is formed in the baffle, a plurality of sliding blocks are arranged on the first sliding groove in a sliding mode, and first fixing pieces are arranged on the sliding blocks. The sliding blocks can be fixed to the baffle through the first fixing pieces, each sliding block is provided with one blocking piece, the sliding pieces are arranged on the blocking pieces in a sliding mode and can transversely slide to change the width of the blocking pieces, the sliding pieces are provided with second fixing pieces, and the sliding pieces can be fixed to the blocking pieces through the second fixing pieces. The positions of the blocking pieces on the baffles can be adjusted, when the width of the prefabricated wall body is changed, the baffles do not need to be re