Purpose of this invention regards measuring blood flow simply from the physiological signal due to simple device constitution and simple signal processing technology. With this invention, when measuring the blood flow, the skin surface of the measuring object region is made to contact the measurement territory, the skin surface thermometer which measures the skin surface temperature of the measuring measuring object region is prepared. Thermal load is given when measuring the blood flow vis-a-vis the measuring object region, blood flow of the measuring object region is measured after the impression ending of the thermal load, on the basis of the temperature variation of skin temperature of the measuring object region.本発明の目的は、簡素な装置構成と簡易な信号処理技術により、生理信号から簡単に血流量を計測することに関する。本発明では、血流量の測定時に、測定対象部位の皮膚表面を測定領域に接触させ、測測定対象部位の皮膚表面温度を測定する皮膚表面温度計を用意する。血流量の測定時には、測定対象部位に対して熱負荷を与え、熱負荷の印加終了後、測定対象部位の皮膚温度の温度変化に基づいて測定対象部位の血流量を測定する。
