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, configured to come into contact with a portion of the wrist at least between a dorsal side and a palmar side; a strap provided to the device main body, and further configured to be mounted on the wrist; a sensing cuff arranged in a region of the wrist where arteries exist; a back plate provided on a side of the sensing cuff nearer to the curler; a rubber plate provided between the curler and the back plate and configured to elastically deform; a pressing cuff provided on a side of the curler nearer to the strap; and a cuff provided on a side of the curler nearer to the living body.