Wind turbine

A wind turbine for a power generator, comprising:

• a rotor hub adapted for rotatably coupling with said power generator to generate a rotation power thereto, wherein said rotor hub has a peripheral guiding rim and an air passage formed within said guiding rim for allowing an axial flow of air passing through said air passage of said rotor hub;
• and
• a plurality of blades, each of said blades having a proximal end radially extended from said guiding rim of said rotor rub and a distal end outwardly extending to define a blade surface between said proximal end and said distal end, wherein said surfaces of said blades are arranged in such a manner that when said air flow exerts on said blade surfaces of said blades, said rotor hub is driven to rotate for generating said rotational power to said power generator, wherein said rotor hub allows said air flow passing through said air passage to minimize an air drag thereof so as to enhance an efficiency of said rotational power generated by said rotor hub.