For the limit of the amount of design variables , It is difficulty to greatly improve the aerodynamic efficiency and the flight height and velocity adaptability of near-space propeller system, So the paper survey and analyze the foreign major research programs and principles on morphing propeller and rotor structures, trying to find a novel and breakthrough approach to increase significantly the efficiency and flight height and velocity adaptability of near-space propeller system. The study shows that the morphing structures have great potentialities.