Problem to be solved: to provide a living body information measuring apparatus capable of stably measuring the biometric information of the user.The first electrode is disposed so as to be in contact with the external auditory canal of the user, and the second electrode is placed in contact with the ear cavity of the user.Further, a first auxiliary portion which is inserted into an external auditory canal and is made up of an elastic member and the second auxiliary part disposed so as to be in contact with the oval cavity, and the first auxiliary part further comprises a second auxiliary part constituted by an elastic member having different elastic coefficients from each other, and movement of the biometric information measuring device to the user is restricted .Diagram【課題】ユーザの生体情報を安定して測定できる生体情報測定装置を提供する。【解決手段】第１電極が、ユーザの外耳道に接触するように配置され、第２電極が、当該ユーザの耳甲介腔に接触するように配置される。更に、外耳道に挿入され弾性部材によって構成される第１補助部と、耳甲介腔に接触するように配置され前記第１補助部とは弾性係数が互いに異なる弾性部材によって構成される第２補助部とを更に有し、ユーザに対する生体情報測定装置の移動が規制される。【選択図】図１０
