A method and an apparatus of generating electric power by recycling waste wind energy produced by a heat dissipating ventilation machine of an air conditioning equipment comprise: a motive power end producing waste wind energy during its operation; a passive select driver installed at the motive power end for receiving the transmission of the waste wind energy, so that the passive select driver starts running and converts mechanical energy into electric energy; an electric power converter for receiving electric current sent from the passive select driver and outputting power after regulating and modulating AC and DC. The motive power end is used to produce waste wind energy which is converted into electric energy, so as to save the use of electric power and provide a better effect of providing electric power. In the meantime, the waste energy can be reused and thus complying with the requirements for environmental protection.