A stereo video image display apparatus includes a data obtaining unit, a video image generator and an image quality degradation unit. The data obtaining unit obtains left eye video image data and right eye video image data. The video image generator generates sequential data in which a left eye video image data sequence repeating the left eye video image data and a right eye video image data sequence repeating the right eye video image data are arranged alternately to generate a control signal controlling opening and closing of shutter glasses according to the sequential data. The image quality degradation unit processes image quality degradation for object data which is frame data corresponding to one frame either before the switching between the left eye video image data and the right eye video image data and one frame after the switching, or two frames before and after the switching.