Abstract: A sheet material loading and unloading apparatus comprises: a frame having a lower frame and an upper frame attached to the lower frame in such a manner as to freely move to a vertical direction; a vertically movable lifter disposed within the frame; a truck going in and out over the lifter; a plurality of pallets supporting a material or a processed product; a plurality of escapable loading positioning members being disposed in the upper frame; a plurality of escapable material supporting members being disposed in the upper frame; and a carriage being disposed within the frame.