Fabricated wallboard with positioning device and mounting method thereof

The invention relates to the technical field of prefabricated buildings, and discloses a fabricated wallboard with a positioning device and a mounting method thereof. The fabricated wallboard comprises a bottom layer wallboard; a reserved steel bar is fixedly installed in the middle of the bottom layer wallboard; the bottom end of the reserved steel bar is movably sleeved with a positioning steel plate; and butt joint channels are formed in the two sides of the inner side of the positioning steel plate. According to the fabricated wallboard with the positioning device and the mounting method thereof, by changing the structures of the positioning steel plate and the bottom end of an upper layer wallboard, utilizing a concave-convex butt joint mode, connecting metal convex strips with the butt joint channels in a sleeved mode and conducting adsorption alignment through magnets, the situation that the time consumed by butt joint between the wallboards is long is avoided, and the wallboard assembling efficiency is improved; a first magnetic ring and a second magnetic ring strongly adsorb the metal convex strips, so that the bottom end of the upper layer wallboard integrally keeps stable vertical falling; and the butt joint channels, the magnets and the reserved steel bar are located on the same horizontal line, so that the situation that a steel bar sleeve opening is accurately aligned with the reserved steel bar can be guaranteed, and the installation accident that the reserved steel bar is extruded and deformed due to misalignment is avoided.