PROBLEM TO BE SOLVED: To improve accuracy of measurement of biological information.SOLUTION: A biological information measuring device 100 includes a sensor part 111 for measuring biological information. The sensor part 111 is supported by a mounting part 130 mounted on the head of a human body, and in a state that the mounting part 130 is mounted on the head, is disposed at a position opposed to at least either an artery or a vein passing through the head.SELECTED DRAWING: Figure 1【課題】生体情報の測定精度を向上させること。【解決手段】生体情報測定装置100は、生体情報を測定するセンサ部111を含み、前記センサ部111は、人体の頭部に装着される装着部130に支持され、前記装着部130が前記頭部に装着された状態で、前記頭部を通る動脈、又は、静脈の少なくともいずれかに対向する位置に配置される。【選択図】図1