Without using a cuff, a highly reproducible blood flow in a living tissue, which is a target measurement site of a subject, is measured easily and with high accuracy, and deterioration in blood flow measurement accuracy is suppressed. The blood flow measuring device includes a contact pressure measurement unit that detects a contact pressure of a target measurement site of a subject, and a contact pressure of the target measurement site detected by the contact pressure measurement unit when a predetermined contact pressure is detected. And a blood flow measuring unit for measuring a blood flow at the target measurement site.カフを使用することなく、被検体の対象測定部位である生体組織内の再現性の高い血流量を簡易且つ高精度に測定し、血流量の測定精度の劣化を抑制する。血流量測定装置は、被検体の対象測定部位の接触圧を検出する接触圧測定部と、前記接触圧測定部により検出された前記対象測定部位の接触圧が所定の接触圧となった場合に、前記対象測定部位の血流量を測定する血流量測定部と、を備える。
