To provide a biological information measurement device capable of measuring biological information other than SpOwhile having a compact probe configuration.SOLUTION: A biological information measurement device 10 comprises: a probe 100 comprising a measurement light emission part for emitting a measurement light to a measurement portion, and a transmission/reflection light entry part to which a transmission light or reflection light of the measurement light which passed the measurement portion enters, and being attached to the measurement portion； a multi wavelength light source 210 for emitting light including at least red light and near infrared light； a calculation part 220 for determining a plurality of kinds of biological information based on transmission/reflection light； and a light cable 300 provided between the multi wavelength light source 210 and the probe 100, and between the probe 100 and the calculation part 220, sending the light obtained on the multi wavelength light source 210 to the probe 100, and sending the transmission/reflection light obtained on the probe 100 or an electric signal based on the transmission/reflection light to the calculation part 220.SELECTED DRAWING: Figure 1【課題】コンパクトなプローブ構成でありながら、ＳｐＯ２以外の他の生体情報も測定可能な生体情報測定装置を提供すること。【解決手段】生体情報測定装置１０は、測定部位に向けて測定光を出射する測定光出射部と測定部位を透過した測定光の透過光又は反射光を入射する透過／反射光入射部とを有し、測定部位に装着されるプローブ１００と、少なくとも赤色光及び近赤外光を含む光を発光する多波長光源２１０と、透過／反射光に基づいて複数種類の生体情報を求める演算部２２０と、多波長光源２１０とプローブ１００との間、及び、プローブ１００と演算部２２０との間に設けられ、多波長光源２１０で得られた光をプローブ１００に送るとともに、プローブ１００で得られた透過／反射光又は透過／反射光に基づく電気信号を演算部２２０に送る、光ケーブル３００と、を有する。【選択図】図１
