A vital information measuring device includes: a first light emitter for outputting light having a first wavelength; a second light emitter for outputting light having a second wavelength different from the first wavelength; a light detector for detecting the light outputted from the first light emitter and the light outputted from the second light emitter; an emission controller for controlling the first light emitter and the second light emitter to emit the respective light at sampling frequencies different from each other a detection controller for controlling the light detector to detect the light from the first light emitter and the light from second light emitter in synchronism with the emission timing of the first light emitter and the emission timing of the second light emitter, respectively; and a storage for storing therein a light detection signal outputted from the light detector as measurement data.