Provided is a biometric information measuring device 100, including a sensor module 20 that has N light-emitting elements 21 (N being an integer of 3 or more) that emit light having different wavelengths, and N-1 light-receiving elements 22 that receive light emitted from the light-emitting elements 21 and reflected by a biological tissue 10 and that output signals corresponding to the light having different wavelengths； and a signal processing unit that executes signal processing based on the output of the light-receiving elements 22, in which at least two light-emitting elements 21 are disposed on a circumference at a constant radius from light-receiving elements 22 of the sensor module 20 as a center.
