There is provided a small-sized head-mount type vision testing device, which is a head-mount type vision testing device mounted on a testee's head, including: a display device that presents a visual target to an eyeball of the testee； a display optical system that guides a light of the visual target presented on the display device, to a retina of the eyeball； an imaging device that images the eyeball； and an observation optical system that guides an image of the eyeball to the imaging device, the display optical system further comprising a mirror that reflects a light of a specific wavelength and transmits the other light at a point closer to the eyeball side than the display device, wherein an optical axis from a pupil of the eyeball to the mirror in the display optical system and an optical axis from the pupil to the mirror in the observation optical system, coincide with each other, and the optical axis from the pupil of the eyeball to the mirror in the display optical system and an optical axis from the mirror to the display device in the display optical system, are bent through the mirror.
