To provide a human state estimating device which accurately estimates a human state. The human state estimating device includes: a storage unit (16) which stores reference data (17) in which a human state and a reference profile including a horizontal component of a standard microsaccade in the human state are corresponded to each other, for each of plural personal attribute information; a video obtaining unit (11) which obtains video of a user's eyeball, with an eyeball rotation angle accuracy of 0.05 degrees or higher, and a measuring speed of 120 samples per second or higher; an analyzing unit (12) which generates an actual-measurement profile including the horizontal component of the microsaccade, from fixational eye movement shown in the video; a personal attribute information obtaining unit (13) which obtains the user's personal attribute information; and an analyzing unit which estimates the human state by searching, in the reference data (17), for a reference profile that corresponds to the obtained personal attribute information and is closest to the actual-measurement profile.