the present invention relates to correcting errors of multiple stream - based 3d images . the present invention comprises a 3d image synchronizing unit which synchronizes a first image and a second image consisting the 3d image ; a 3d image correcting unit which detects an error block in the first image , searches a corresponding block in the second image , and corrects the error block on the basis of the block information of said corresponding block ; and a compositing unit which composites the corrected first image and the second image to generate a 3d stereoscopic image . according to the present invention , bit errors occurring when transmitting multiple stream of 3d image can be corrected , providing better quality of 3d images . also , error correction can be easily performed by using the method of the present invention without complicated calculations .