This ultraviolet-ray irradiation device for an implant is provided with: an ultraviolet-ray lamp mounted inside a housing and a conveyable implant holding body disposed opposite the ultraviolet-ray lamp that is inside the housing. The ultraviolet-ray irradiation device is characterized in that the implant holding body has an implant stand, wherein the implant stand retains the implant in a horizontal orientation, and within an effective irradiation region of ultraviolet-ray irradiation from the ultraviolet-ray lamp, by supporting one end of an implant mount that is detachably attached to the implant.
