A blood pressure-related information display device displays a representative value setting field for setting a representative value obtainment mode as an image in a part of a display screen. The representative value setting field includes a setting area and a list area, the latter of which is displayed when, for example, a doctor clicks an inverted triangular mark in the setting area with a mouse. Representative value obtainment modes are displayed in the list area in list format so that all the modes can be viewed. The list area is configured so that any one of a plurality of types of representative value obtainment modes can be selected.