PROBLEM TO BE SOLVED: To provide a deep body temperature measurement system and method with which it is possible to measure an accurate deep body temperature in even a state where a deep part temperature probe is worn continuously for a long time.SOLUTION: A non-heating type deep part temperature probe comprises: a body surface-side temperature sensor 13； an outside air-side temperature sensor 15 disposed opposite to the body surface side of this sensor via a heat insulator 11 of know thermal resistance； and external thermal resistance change means 2 for changing an external thermal resistance condition on the outside air side. The probe acquires a set of measured temperature values at a first point of time at which the measured temperature value of each sensor during initialization has become uniform； differentiates the external thermal resistance condition from the one at the first point of time using the external thermal resistance change means 2 during initialization, and acquires a set of measured temperature values at a second point of time at which the measured temperature value of each sensor has become uniform； calculates the thermal resistance of the subcutaneous tissue of the body using the measured temperature values at the first and second points of time； and calculates a deep body temperature at a discretionary point of time using the measured temperature value of each sensor at a discretionary point of time and the thermal resistance of the subcutaneous tissue of the body.SELECTED DRAWING: Figure 2【課題】連続して長時間深部温プローブを装着した状態でも正確な深部体温を測定可能な深部体温測定システム及び方法を提供する。【解決手段】非加熱型深部温プローブは、体表面側温度センサ１３、このセンサの体表面逆側に対向して既知熱抵抗の断熱材１１を介して配置された外気側温度センサ１５、外気側の外部熱抵抗条件を変更する外部熱抵抗変更手段２を備える。初期設定中の各センサ温度測定値が一定になった第１の時点の温度測定値の組を取得し、初期設定中に、外部熱抵抗変更手段２を用いて第１の時点とは外部熱抵抗条件を異ならせて各センサ温度測定値が一定になった第２の時点の温度測定値の組を取得し、第１・第２の時点の温度測定値の組を用いて、身体の皮下組織の熱抵抗を算出し、任意の時点の各センサの温度測定値、身体の皮下組織の熱抵抗を用い、任意の時点の深部体温を算出する。【選択図】図２
