A biological information processing device, including: a measuring unit that measures the pulse rate of a test subject a detector that detects a body motion of the test subject a computation unit that computes an intensity of exercise performed by the test subject using a result of detection by the detector a first estimation unit that estimates an estimated pulse rate using the exercise intensity computed by the computation unit and a controller that controls so that the pulse rate from a result of the measurement is displayed in an instance in which measurement by the measuring unit is possible, and the estimated pulse rate estimated by the first estimation unit is displayed in an instance in which measurement by the measuring unit is not possible.
