Provided is a biological information measurement device capable of improving accuracy in detecting biological information. The biological information measurement device is provided with a biological information detection unit, a control unit (9) and a housing. The biological information detection unit has a first surface-side electrode (front surface-side electrode (541)) having electrodes (5411, 5412) exposed on a first surface of the housing and capable of making contact with a user , a second surface-side electrode (back electrode (542)) having electrodes (5421, 5422) exposed on a second surface of the housing and capable of making contact with a user, and an electrocardiographic detection unit (547) for performing electrocardiographic detection on the user by using the first surface-side electrode and the second surface-side electrode. At least one of the first surface-side electrode and the second surface-side electrode has a plurality of electrodes. The control unit (9) sets one of the electrodes included in the first surface-side electrode and one of the electrodes included in the second surface to be a working electrode, sets one of the electrodes which have not been set to be a working electrode, to be a reference electrode, and causes the electrocardiographic detection unit (547) to perform electrocardiographic measurement on the user on the basis of a current detected by the working electrodes.La présente invention concerne un dispositif de mesure dinformations biologiques capable daméliorer la précision de la détection dinformations biologiques. Le dispositif de mesure dinformations biologiques est pourvu dune unité de détection dinformations biologiques, dune unité de commande (9) et dun boîtier. Lunité de détection dinformations biologiques comporte une première électrode côté surface (électrode côté surface avant (541)) ayant des électrodes (5411, 5412) exposées sur une première surface du boîtier et capable de venir en contact avec un utilisateur, un
