To provide a wind-power generator apparatus with effective reinforcement that eliminates the need for maintenance including rust prevention.

In the wind-power generator apparatus 1, a wind-power generator 7 is installed on the top of a support pole 2 made of steel erected on a foundation plate 6, pre-cast concrete blocks 3 for reinforcement are fitted in the support pole 2 so as to cover the outer circumference thereof, and the pre-cast concrete blocks 3 are configured to combine at least halved concrete units 8.