A device for measuring a radiation dose according to the present invention includes a radiation exposure unit which exposes radiation, a frame unit which supports the radiation exposure unit, a measurement housing unit which is mounted on the frame unit, a scintillation unit which is mounted on the measurement housing unit and emits light due to the radiation exposed by the radiation exposure unit, an image capturing unit which captures an image of the scintillation unit, and a dose measuring unit which measures, on the basis of the captured image obtained by the image capturing unit, a dose of radiation to which the scintillation unit is exposed.