Gypsum board anti-cracking device for building decoration engineering construction

The invention discloses a gypsum board anti-cracking device for building decoration engineering construction, which comprises an anti-cracking plate, a movable rod, a push rod and a fixed block, first springs are welded to the top and the outer wall of one side of the anti-cracking plate, the fixed block is welded to the top and the bottom of each first spring, a shaft rod is mounted on the inner wall of the anti-cracking plate, and the movable rod is mounted on the shaft rod. A movable rod is installed on the front face of the shaft rod in a penetrating mode. According to the invention, a threaded rod is mounted, a worker can screw the threaded rod to rotate in a fixed sleeve by means of the arrangement of threads in the fixed sleeve, so that the threaded rod can extend into the fixed sleeve, an extension plate can be pulled out from the interior of an embedding plate through the movement of the threaded rod, and the length of the threaded rod is increased by means of the extension of the extension plate; th