A blood-pressure-related information display device includes a data acquisition unit, a risk value calculator, and a display processor. The data acquisition unit acquires blood pressure data including a systolic blood pressure and a diastolic blood pressure for the subject. The risk value calculator obtains a systolic risk value representing a risk corresponding to the acquired systolic blood pressure and a diastolic risk value representing a risk corresponding to the acquired diastolic blood pressure based on a predetermined blood pressure standard. The display processor performs processing of displaying a risk range from the systolic risk value to the diastolic risk value in a curved or straight elongated display region defining a one-dimensional risk coordinate in the display screen.