A pulse photometer comprising: an input interface configured to receive a first signal, which corresponds to an intensity of a first light including a first wavelength passing through a body of a subject, and a second signal, which corresponds to an intensity of a second light including a second wavelength passing through the body ; and one or more processors configured to calculate a concentration of at least one blood light absorber in the subject, based on the first signal and the second signal, wherein the one or more processors are configured to: acquire a first variation corresponding to a variation of the first light due to blood pulsation in the subject, acquire a second variation corresponding to a variation of the second light due to the pulsation, and calculate the concentration of the at least one blood light absorber, based on a value obtained by adding a first correction amount to the first variation and a value obtained by adding a second correction amount to the second variation, wherein the first correction amount is based on at least one of a first constant, a function of the first variation and a function of the second variation, which are statistically determined, and wherein the second correction amount is based on at least one of a second constant, the function of the first variation and the function of the second variation, which are statistically determined. an input interface configured to receive a first signal, which corresponds to an intensity of a first light including a first wavelength passing through a body of a subject, and a second signal, which corresponds to an intensity of a second light including a second wavelength passing through the body ; and one or more processors configured to calculate a concentration of at least one blood light absorber in the subject, based on the first signal and the second signal, wherein the one or more processors are configured to: acquire a first variation corresponding to a variation of the first light due to blood pulsation in the subject, acquire a second variation corresponding to a variation of the second light due to the pulsation, and calculate the concentration of the at least one blood light absorber, based on a value obtained by adding a first correction amount to the first variation and a value obtained by adding a second correction amount to the second variation, wherein the first correction amount is based on at least one of a first constant, a function of the first variation and a function of the second variation, which are statistically determined, and wherein the second correction amount is based on at least one of a second constant, the function of the first variation and the function of the second variation, which are statistically determined. acquire a first variation corresponding to a variation of the first light due to blood pulsation in the subject, acquire a second variation corresponding to a variation of the second light due to the pulsation, and calculate the concentration of the at least one blood light absorber, based on a value obtained by adding a first correction amount to the first variation and a value obtained by adding a second correction amount to the second variation, wherein the first correction amount is based on at least one of a first constant, a function of the first variation and a function of the second variation, which are statistically determined, and wherein the second correction amount is based on at least one of a second constant, the function of the first variation and the function of the second variation, which are statistically determined. <EOS>