Folding small-sized unmanned aerial vehicle

The invention provides a folding small-sized unmanned aerial vehicle, which comprises a wing-fuselage blended body, a pair of airfoils, an empennage and a tail boom, wherein the airfoils are respectively arranged on both sides of the wing-fuselage blended body; a connection position of each airfoil and the wing-fuselage blended body is provided with a first folding mechanism; the first folding mechanisms are used for folding the airfoils downwards relative to the wing-fuselage blended body and locking the unfolded airfoils in an unfolded state; one end of the tail boom is connected with the empennage, while the other end is connected with the wing-fuselage blended body through a second folding mechanism; and the second folding mechanism is used for folding the tail boom downwards relative to the wing-fuselage blended body and locking the unfolded tail boom in an unfolded state. After being folded, an airframe structure of the small-sized unmanned aerial vehicle can be accommodated in a cuboid packing chest; and the folding small-sized unmanned aerial vehicle can unfold to the flight condition automatically by utilizing an air-powered actuating device to execute flight tasks of air delivery and the like, and simultaneously, the small-sized unmanned aerial vehicle is short in assembly and disassembly time and convenient in transportation.