measurement probe 3 that is inserted into within the subject are connected to a biological optical measurement device 2 which performs optical measurement with respect to a living tissue, a connector portion 22 which is the measurement probe 3 is detachably connected, a supply unit 24 for supplying air to the connector portion 22, the connector portion 22 and the supply unit 24 and the pipe 24a communicating, a pressure detector 25 for detecting the pressure value of the pipe 24a, the measurement probe 3 connector portion 22 in the connected state, on the basis of the pressure value the pressure detector 25 detects comprises a wear judgment unit 29b judges wear of the connector portion 22.被検体内に挿入される測定プローブ3が接続され、生体組織に対して光学測定を行う生体光学測定装置2であって、測定プローブ3が着脱自在に接続されるコネクタ部22と、コネクタ部22に空気を供給する供給部24と、コネクタ部22と供給部24とを連通する配管24aと、配管24aの圧力値を検出する圧力検出部25と、測定プローブ3がコネクタ部22に接続された状態で、圧力検出部25が検出した圧力値に基づいて、コネクタ部22の摩耗を判定する磨耗判定部29bと、を備える。
