A height correction device measures height information on the reference position of the heart and height information on the wrist to which a blood pressure measurement device is attached using communication technology when the body of a subject rotates or moves at the position where the measurement device is attached during the measurement period including the sleep period, subjects the obtained blood pressure measurement values to height correction using height information, and approximates the obtained blood pressure measurement values to blood pressure measurement values measured at the reference position of the heart, to thereby obtain highly accurate measurement values.
