To provide a biological data measuring apparatus, regardless of SHF including one temperature measuring means, capable of acquiring a deep temperature without causing another means to measure internal thermal resistance of an object (a living body).SOLUTION: The biological data measuring apparatus includes a substrate that is disposed via a support member at a position spaced at a prescribed distance apart from a body surface so as to generate an air layer toward the body surface of a living body. The substrate includes temperature measuring means having a radiation thermometer for measuring a body surface temperature Tsk of the body surface, and a substrate thermometer for measuring a substrate temperature Tsub of the substrate. The temperature measuring means measures the body surface temperature Tsk and the substrate temperature Tsub at a same place at least twice, a first time A and a second time B, and acquires internal thermal resistance Rthbody of the living body from an inclination of the body surface temperature Tsk, an inclination of the substrate temperature Tsub, and thermal resistance Rthair of the air layer.SELECTED DRAWING: Figure 16c【課題】温度計測手段が一つであるＳＨＦでありながら、物体（生体）の内部熱抵抗を別の手段で計測することなく、深部温度を求めることができるようにする。【解決手段】生体の体表面との間に空気層が生ずるように支持部材を介して上記体表面から所定距離隔てた位置に配置される基板を備え、上記基板に、上記体表面の体表面温度Ｔｓｋを測定する放射温度計および上記基板の基板温度Ｔｓｕｂを測定する基板温度計を含む温度計測手段が設けられており、上記温度計測手段にて同一場所で上記第１時刻Ａと上記第２時刻Ｂの少なくとも２回にわたって上記体表面温度Ｔｓｋと上記基板温度Ｔｓｕｂを計測し、上記体表面温度Ｔｓｋの傾き、上記基板温度Ｔｓｕｂの傾きおよび空気層の熱抵抗Ｒｔｈａｉｒより、生体の体内熱抵抗Ｒｔｈｂｏｄｙを求める。【選択図】図１６ｃ
