A twin-duct unmanned aerial vehicle controlled by transversely distributed dual motors synergistically comprises twin ducts, the dual motors, and a control surface assembly, the dual motors are transversely distributed at the middle portion of a vehicle body in a standing mode and both adopt synchronous belts and synchronous wheels to transmit power to propellers at two sides correspondingly, and the plane where rotating shafts of the propellers at the two sides are located and the plane where the dual motors are located are parallel but not coplanar; the control surface assembly is located below the ducts, pushes and deflects control surfaces through a rocker-arm pulling rod structure to control the posture and direction of the unmanned aerial vehicle and controls the rotating speed of the motors through an electronic speed controller to adjust lift force and the roll posture of the unmanned aerial vehicle; and the electronic speed controller and a steering engine act synchronously to enhance power output of the dual motors and unify the rotating speed during vertical take-off and landing of the unmanned aerial vehicle and enable the dual motors to cooperate with the synchronous belts, the synchronous wheels, the ducts and the control surface assembly all corresponding to the dual motors to achieve smooth and steady taking-off and landing and high-speed parallel sailing. According to the twin-duct unmanned aerial vehicle controlled by the transversely distributed dual motors synergistically, triangular symmetrical layout is adopted, structure rigidity of the whole unmanned aerial vehicle is good, the space use ratio is high, the dual motors are transversely distributed at the middle portion of the vehicle body in the standing mode, the synchronous belts are adapted to cooperate to transmit the power to the propellers, the rotate speeds of dual power are unified, and the lifting power is increased, so that the smooth and steady take-off and landing process of the unmanned aerial vehicle is guaranteed; and meanwhile, a couple of linked control surfaces are arranged under the duct of the propeller at each side and cooperate with the electronic speed controller to achieve control over pitching, yaw and roll motion of the whole vehicle.