PROBLEM TO BE SOLVED: To provide a biological information measurement device capable of accurately measuring biological information.SOLUTION: A biological information measurement device 100 includes a body part 1 having a detection part 2 for detecting a biological signal and belts for fixing the detection part to a measurement region by pulling the body part in a first circumferential direction of the measurement region and in a reverse second circumferential direction. Each belt is equipped with an air cushion 17 or 18 for adjusting each force to pull the body part, and a pressure detection part 15 or 16 is provided in a range of the body part in which each force with which each belt pulls the body part has an impact on the body part. A CPU 10 causes a tensile force of each belt to be adjusted with each adjustment amount based on each detected pressure and relationships between the two pressures, and after the adjustment, the detection of the biological signal is started.SELECTED DRAWING: Figure 2【課題】正確に生体情報を測定することのできる生体情報測定装置を提供する。【解決手段】生体情報測定装置１００は、生体信号を検出するための検出部２を有する本体部１と、本体部を測定部位の第１の周方向および逆向きの第２の周方向に引っ張ることで、検出部を測定部位に対して固定するためのベルトを備える。各ベルトには、本体部を引っ張る各力を調整するためのエアクッション１７，１８が設けられ、本体部の、各ベルトが本体部を引っ張る各力が本体部に影響する範囲に圧力検出部１５，１６が設けられている。ＣＰＵ１０は、検出された各圧力、および両圧力の関係に基づいた各調整量で各ベルトの引っ張り力を調整させ、その調整の後に生体信号の検出を開始する。【選択図】図２
