PROBLEM TO BE SOLVED: To provide a blood pressure measurement cuff with which blood pressure can be measured with high accuracy even when the cuff width is sized to a smaller value (25 mm or so).SOLUTION: A blood pressure measurement cuff 20 according to the present invention comprises a belt-like pressing cuff 21 which is wrapped about a measurement site 90 and presses the measurement site 90 when supplied with a pressing fluid. The blood pressure measurement cuff has also an arterial pressure sensor 40, separately from the pressing cuff 21, arranged on a portion of the inner peripheral surface of the pressing cuff 21 to be faced to an artery 91 in the measurement site 90 to detect a pressure applied by the pressing cuff 21 to an artery passing portion 90a of the measurement site 90.SELECTED DRAWING: Figure 2【課題】カフ幅寸法を小さく設定（例えば２５ｍｍ程度に）した場合であっても、血圧を精度良く測定できる血圧測定用カフを提供すること。【解決手段】この発明の血圧測定用カフ２０は、帯状で、被測定部位９０に巻き付けられ、加圧用の流体の供給を受けて被測定部位９０を圧迫する押圧カフ２１を備える。押圧カフ２１の内周面のうち被測定部位９０の動脈９１に対向すべき部分に、押圧カフ２１とは別に、押圧カフ２１によって被測定部位９０の動脈通過部分９０ａに加えられた圧力を検出する動脈圧センサ４０が配置されている。【選択図】図２
