To facilitate carrying by making a sphygmomanometer combining a blood-constricting cuff band with a sphygmomanometer unit thin and compact when not engaged in measurement, a sphygmomanometer combines blood-constricting cuff band 1 with sphygmomanometer unit 2, and constitutes a structure that can be switched between measurement position (I) with sphygmomanometer unit 2 overlapping blood-constricting cuff band 1 and storage position (II) with blood-constricting cuff band 1 and sphygmomanometer unit 2 placed side by side.