The invention relates to a method for correcting the quenching deformation out-of-tolerance of a bearing ring rollaway nest of a wind driven generator. The method comprises the following steps: measuring a bearing ring to find out an ellipse major axis direction of ring deformation; applying pressure to an extension part of the ring deformation, namely the ellipse major axis direction by adoptinga pressing plate; applying the pressure towards both ends of the ellipse major axis direction so as to correct the deformation; putting both the ring and a clamp in a tempering furnace for tempering at medium-and-low temperature for 4-8 hours with a low tempering temperature of 160-200 DEG C so as to finalize the shape and eliminate the stress. The has simple method and simple equipment device and can semi-quantitatively and quantitatively finish the correction of the deformation out-of-tolerance of the bearing ring. The method mainly corrects the out-of-tolerance of ovality and guarantees that subsequent processing has no influence on the depth of a quenching layer.