Display teaching aid convenient to store

According to the technical scheme, the display teaching aid comprises a display stand, display racks A and a display rack B. The display racks A are connected to the two sides, close to the top, of the display stand in a sleeved mode, a rotating shaft A is installed at the position, close to the middle, of the inner top of the display stand through a supporting frame A, and the rotating shaft A is connected to the interiors of the display racks A on the two sides in a sleeved mode. A worm gear A is installed in the middle of the outer surface of the rotating shaft A, a driving motor A is installed in the middle of the top in the display stand, a worm A is installed on the portion, located on one side of the worm gear A, of an output shaft of the driving motor A, and the worm gear A is meshed with the worm A. According to the display teaching aid convenient to store, the problems that an existing display teaching aid adopts a single display position for teaching aid display, the display area is single, meanwhi