A display device includes an image light generating device, a light-guiding member on which image light emitted from the image light generating device is incident, a first diffraction element provided at an incident side of the light-guiding member and having positive power, a second diffraction element provided at an exit side of the light-guiding member and having positive power, and a mirror provided at an end portion at the incident side of the light-guiding member and having positive power, in which the image light passed through the first diffraction element is reflected by the mirror and propagates in the light-guiding member, and the image light incident on the second diffraction element is deflected by the second diffraction element forming an exit pupil.