Blood pressure measurement device

A blood pressure measurement device comprising:

• an outer case;
• a base housed in the outer case;
• a pump provided on a surface of the base such that the pump is shifted from a center of the outer case and located on one side as viewed in a circumferential direction of a living body;
• a first pressure sensor and a second pressure sensor that are provided on the surface of the base such that the first pressure sensor and the second pressure sensor are arranged side by side in the circumferential direction and located on one side as viewed in a direction orthogonal to the circumferential direction;
• and
• a first on-off valve and a second on-off valve that are provided on the surface such that the first on-off valve and the second on-off valve are arranged side by side in the circumferential direction with reference to the first pressure sensor and the second pressure sensor.