A 3D decoding apparatus according to the present invention includes: a decoding unit which decodes left-eye and right-eye code signals to generate left-eye and right-eye decode signals; an error determining unit which determines an error of the left-eye and the right-eye code signals; an output determining unit which determines, when there is an error in one of the left-eye and the right-eye code signals, whether the one of the code signals that is determined as including an error has an error data mount equal to or greater than a first threshold; and an output unit which outputs neither the left-eye nor the right-eye code signal when the error data amount is smaller than the first threshold, and outputs only the decode signal obtained by decoding the other of the code signals when the error data amount is equal to or greater than the first threshold.