The present invention is directed to a three-dimensional display device so adapted that an uncomfortable feeding in a case where a right eye image and a left eye image on a screen are replaced with each other in correspondence to the position of the head of a viewer can be eliminated, to laterally move the position of a shading barrier to laterally move a normal view position or a reversed view position upon selectively turning liquid crystal shutters provided in both ends in the lateral direction of a slit of the shading barrier on and off by barrier movement means when the head of the viewer is in a moire position between the normal view position and the reversed view position.