PROBLEM TO BE SOLVED: To provide a measuring device and measuring method which can improve measurement accuracy of biological information.SOLUTION: The measuring device comprises: an external acoustic meatus connection section 116 inserted into an external acoustic meatus； a shaft 113 which extends along the insertion direction from the external acoustic meatus connection section 116； a biological sensor 111 which can rotate around the shaft 113 with respect to the external acoustic meatus connection section 116； and a control section which measures biological information on the basis of biological measurement output obtained from the biological sensor 111.SELECTED DRAWING: Figure 2【課題】生体情報の測定精度を向上可能な測定装置及び測定方法を提供する。【解決手段】測定装置は、外耳道に挿入する外耳道接続部１１６と、外耳道接続部１１６から挿入方向に沿って延在する軸部１１３と、軸部１１３を軸にして、外耳道接続部１１６に対して回動可能な生体センサ１１１と、生体センサ１１１から得られる生体測定出力に基づいて生体情報を測定する制御部とを備える。【選択図】図２
