Abstract: The present invention relates to a vertical shaft aero-generator. An aero-generator has the advantage that it is not influenced by the wind direction, but the resistance in the reverse direction of rotation is a disadvantage thereof. For figuring out this disadvantage, a plurality of dimple panel wind guide apparatuses are mounted around the outer surface of a cylindrical vertical shaft windmill as well as on top and bottom thereof in order to maximally guide the wind coming from various directions including above and below to the rotational direction of the windmill, thereby the efficiency of the vertical shaft aero-generator is increased. The dimple panel wind guide apparatus includes a feature that a great number of dimples are formed on both entire lateral surfaces of the dimple panel so that the resistance may be minimized.