The layout of the Jueying small unmanned aerial vehicle adopts a coaxial dual rotor and front tension propeller type. Driven by a high-power brushless motor, powered by lithium polymer batteries, and operated by radio visual remote control, the flight time is 5-15 minutes, and the remote control distance is not less than 800 meters. Capable of forward flight, vertical takeoff and landing, hovering, yaw, and other performance. It can achieve flight verification of unmanned principle prototypes while breaking through key technologies such as rigid rotor design and overall aerodynamic layout optimization design, and provide a technical foundation for manned principle prototypes.