A blood pressure measurement device is equipped with a pressing surface which is formed with an element array of plural pressure sensors arranged in one direction and an element array of plural pressure sensors arranged in the one direction, an air bag for pressing the pressing surface against a living body, a control unit for calculating blood pressure values in a radius artery on the basis of pressure pulse waves that are detected by the pressure sensors in a state that the pressing surface is pressed against the living body by the air bag, and a rotational drive unit for performing driving to rotate the pressing surface about each of axes that are perpendicular to a pressing direction of the air bag.
