Calibration reference body for fluorescence measurement device

A reference body 1 is provided with: a support body 10 provided with a first light transmission part 18, a second light transmission part 19, a first accommodation space 14, and a second accommodation space 15; a first fluorescent body 20 that is accommodated in the first accommodation space 14 and emits first fluorescence of a second wavelength band when irradiated, via the first light transmission part 18, with first excitation light of a first wavelength band; a second fluorescent body 30 that is accommodated in the second accommodation space 15 and emits second fluorescence of the second wavelength band when irradiated, via the second light transmission part 19, with second excitation light of the first wavelength band; and a light blocking part 13 disposed between the first accommodation space 14 and second accommodation space 15. If the amount of the first excitation light incident on the first light transmission part 18 and the amount of the second excitation light incident on the second light transmis