Fabricated building wallboard building device

The invention belongs to the technical field of fabricated buildings, and particularly relates to a fabricated building wallboard building device. The fabricated building wallboard building device comprises a base, end bumping posts and side bumping posts; a fixing structure connected with the ground is arranged on the base; one end of the base is connected with the lower ends of the end bumping posts; the two sides of the end posting columns are respectively provided with one side bumping post; two side bumping posts and one end bumping post jointly form a vertical sliding chute structure; and thus, a prefabricated wallboard can be guided during hoisting and dropping of the prefabricated wallboard through the sliding chute structures, so that mounting holes of the lower surface of the prefabricated wallboard can be aligned with ground reserved steel bars; the wallboard is fixed through the building device after falling to the ground; unhooking operation can be advanced; the hoisting time of the wallboard dur