A wind power generating apparatus that includes a generator unit having an upper shaft and a lower rotary shaft connected to a rotor, wherein a circumference of the generator unit is supported by an upper portion of a support structure at a specified level, a lifting propeller vertically coupled to an end of the upper rotary shaft via a first coupler, a wind-power fan vertically coupled to an end of the lower rotary shaft via a second coupler, and a support unit coupled to a lower portion of the support structure so as to reversely support summed weights of the rotor, the lifting propeller, and the wind-power fan on a center of rotation of a lower side of the wind-power fan.