An apparatus and method for attenuating a stereoscopic sense of a stereoscopic image. To generate a stereoscopic image to which a disparity is applied, an object for which a stereoscopic sense attenuation is performed is extracted from among at least one object in the stereoscopic image, a stereoscopic sense attenuation degree corresponding to a position of the at least one object is calculated, and a final stereoscopic image in which the calculated stereoscopic sense attenuation degree is applied to the extracted object is output. Accordingly, a stereoscopic sense of a stereoscopic image displayed to overlap a display screen edge is attenuated, thereby minimizing eye fatigue and visual displeasure.