The invention provides an assembly production line for elevator counterweight housings. The assembly production line comprises a correcting mechanism, a belt transmission mechanism and a chain transmission mechanism. One end of the correcting mechanism is connected with the belt transmission mechanism, and the other end of the correcting mechanism is connected with the chain transmission mechanism. A jacking transmission mechanism is arranged between the correcting mechanism and the belt transmission mechanism. One side of the correcting mechanism serves as a fixed end, and the other end of the correcting mechanism serves as a movable end. The fixed end and the movable end of the correcting mechanism are provided with a fixed positioning part and an adjustable positioning part respectively. The fixed positioning part is installed at the fixed end and the movable end through vertical bearing seats. The adjustable positioning part is connected with a transverse lead screw. The movable end of the correcting mechanism is connected with a supporting guide rail and a main machine frame. A hand wheel is installed on a longitudinal lead screw.