The invention discloses an ornithopter flapping wing driving mechanism for science and education demonstration, and belongs to the technical field of the science and education demonstration. The ornithopter flapping wing driving mechanism comprises a machine frame and a motional assembly mounted on the machine frame, wherein the motional assembly comprises a speed-reducing motor, a shaft coupler and an adjustable crank and rocker mechanism; the speed-reducing motor drives the adjustable crank and rocker mechanism to move through the shaft coupler; the adjustable crank and rocker mechanism comprises an adjustable crank and a pair of rocker assemblies; the adjustable crank comprises a transmission shaft, a crank, a slide block and an adjusting screw rod; the adjusting screw rod runs througha crank threaded hole and a slide block threaded hole in a screwing manner so as to limit the slide block in a strip-shaped sliding slot; each rocker assembly comprises a connecting rod and a rocker arm; the middle parts of the rocker arms are hinged to the machine frame through rotating shafts; the lower ends of the connecting rods are hinged to a short shaft of the adjustable crank; the upper ends of the connecting rod are hinged to the inner ends of the rocker arm. The ornithopter flapping wing driving mechanism has the characteristics of a long service life, convenience and safety in operation, simpleness, easy understanding, strong enlightenment, suitability for popularization and the like.