Dosimeters 140 are housed in dosimeter housing pockets 130 of a dosimeter fitting wear including: wear main bodies 120, 150 which cover measuring positions on at least subject bodies 100, 102, and 110, and can be detachably fitted on the subject bodies, and the dosimeter housing pockets 130 provided at positions that come to the measuring positions when the wear main bodies are fitted on the subject bodies, and then the wear main bodies are fitted on the subject bodies. Thereby, a number of dosimeters can be easily fitted on or detached from the surfaces of subject bodies without hindering medical activities, and set positions of the dosimeters can be easily reproduced.