To enhance measurement accuracy of biological information whose measurement value varies according to a respiratory state.SOLUTION: A biological information measurement device 10 reports a reference rhythm of respiration to a person to be measured, and then measures biological information of the person to be measured, so that a rhythm of respiration of the person to be measured approaches a reference rhythm suitable for measuring biological information whose measured value varies according to a respiration state.SELECTED DRAWING: Figure 11【課題】呼吸状態に応じて測定値が変化する生体情報の測定精度を高める。【解決手段】生体情報測定装置10は、被測定者の呼吸のリズムが、呼吸状態に応じて測定値が変化する生体情報の測定に適した基準リズムに近づくように、被測定者に対して呼吸の基準リズムを報知した上で、被測定者の生体情報を測定する。【選択図】図11