The invention belongs to the field of design of aviation aircrafts, and relates to an unmanned aerial vehicle. According to the unmanned aerial vehicle, three-axis flying attitudes of the unmanned aerial vehicle are controlled through a differential algorithm, a transfer algorithm and a mode that motors directly drive three control surfaces. Meanwhile, the three control surfaces are controlled respectively so as to control directions, three-axis control over vehicle attitudes is completed through different combinations of rotating angles of the three control surfaces, and the three control surfaces are composed of the two full-flying type differential control surfaces at the two ends of wings and a full-flying type tail vane on the tail. The unmanned aerial vehicle structurally comprises a load cabin, a controller cabin, a fuel cabin, an engine, a thrust propeller, the wing-body combined wings, the leaf apex differential control surfaces, the horizontal full-flying type tail vane, fixed vertical tail wings and fixed landing gears. The unmanned aerial vehicle is simple in structure, the number of vulnerable movable parts is small, and higher reliability and higher survivability in complex environments are ensured.