Prefabricated wallboard reinforcing structure

The utility model discloses a prefabricated wallboard reinforcing structure which is characterized in that first reinforcing plates are respectively connected to two side parts of a first wallboard and a second wallboard, second reinforcing plates are respectively connected to the upper ends and the lower ends of the first wallboard and the second wallboard, third reinforcing plates are respectively connected to the front surfaces of the first wallboard and the second wallboard, and third reinforcing plates are respectively connected to the front surfaces of the first wallboard and the second wallboard. One side edge of the first wallboard and one side edge of the second wallboard are each connected with a sealing plate, a plurality of sets of positioning blocks are connected to one side of the first wallboard at equal intervals, and a plurality of sets of positioning grooves are formed in one side of the second wallboard at equal intervals; the positioning blocks are inserted into the positioning grooves, th