A blood pressure measuring device includes a device main body; a curler configured to bend along a circumferential direction of a wrist of a living body, and configured to come into contact with a portion of the wrist at least between a dorsal side and a palmar side; a strap on the device main body, configured to cover an outer surface of the curler; a sensing cuff arranged in a region of the wrist where arteries exist; a rubber plate on a side of the sensing cuff nearer to the curler and configured to elastically deform; a pressing cuff between the curler and the rubber plate and configured to press the sensing cuff; and a cuff on a side of the curler nearer to the living body and arranged on the dorsal side of the wrist.