To provide a wing end propulsion device which reduces drag by increasing lift, although the lift decreases more as a wing and a blade come closer to the wing end by blowing up from a high pressure region of the wing end, and vortex generates the drag by blowing up air flow.

Spiral kinetic energy of air flow blown up from the high pressure region of the wing end of the wing and the blade is concentrated by a wing end blade, stored in a rotating shaft of a vertical axis windmill mounted on an outside edge of the wing end, and which is used as a driving force of a propeller of the wing end part by increasing rotational speed by an accelerating gear. Induced drag is reduced and the lift is relatively increased, thus increasing the energy conversion efficiency is useful in assuring resources and protecting the environment.