Abstract: A hair removal device that performs hair removal treatment using light emitted from a light source, the hair removal device including: a light source unit including the light source; an irradiation position control mechanism configured to guide the light emitted from the light source unit to an irradiation scheduled position; an imaging unit configured to be able to image a predetermined region including the light emitted toward the irradiation scheduled position; and an irradiation position deviation amount detection unit configured to detect an irradiation position deviation amount between the irradiation scheduled position and a real irradiation position of the light, the hair removal device being configured to correct a guide position of the light by the irradiation position control mechanism by using the irradiation position deviation amount detected by the irradiation position deviation amount detection unit.