A biological information measurement device includes a correction unit that receives a first signal expressing a change in an amount of light of a first wavelength detected from a living body and a second signal expressing a change in an amount of light of a second wavelength detected from the living body, and corrects at least one of the first signal and the second signal to reduce a difference between an amount of change in the first signal and an amount of change in the second signal associated with a change in an amount of arterial blood of the living body, and a computing unit that computes a change in a blood oxygen concentration in the living body on a basis of the first signal and the second signal of which at least one is corrected by the correction unit.
