PURPOSE: A wind power generator is provided to prevent the life reduction or malfunction of parts and to save dehumidifying energy because the internal air of the wind power generator is dehumidified by the heat of a heating element. CONSTITUTION: A wind power generator comprises a heating element, a cooler (170), and a dehumidifier (200). The heating element generates heat. The cooler is installed inside the wind power generator and cools the heating element using the internal and external air of the wind power generator. The dehumidifier has a moisture absorbing rotor (210) with a moisture absorbent. The dehumidifier exhausts the internal air dried by passing through one side of the moisture absorbing rotor. In the dehumidifier, the air of which temperature is increased via the cooler passes through the other side of the moisture absorbing rotor to remove moisture absorbed in the moisture absorbent.
