The invention provides a method and device for controlling a wind generating set to run. The method comprises the steps that the design service life of the wind generating set and work service life ofthe wind generating set under multiple power modes are determined; the wind generating set is different in work service life under the multiple power modes, and the work service life of the wind generating set under any power mode is the service life capable of being achieved under running of any power mode; on the basis of the design service life of the wind generating set and the work service life of multiple power modes, the wind generating set is controlled to run under each power mode, and the wind generating set runs at the preset service life, and the service life is consumed.