PROBLEM TO BE SOLVED: To provide a measuring device capable of accurately measuring a plurality of biological information. SOLUTION: A measuring device 100 emits light toward a measuring position, a light source 203, reflected light from a living body at the measuring position, or transmitted light transmitted through the living body at the measuring position according to a plurality of wavelengths. A living body to be measured, a spectroscopic means for dispersing, a light receiving means for receiving reflected light or transmitted light dispersed at a plurality of wavelengths, a detecting means for detecting a change in the amount of received reflected light or transmitted light, and a living body for measuring. It includes a setting means for setting the light emission intensity of the light source according to the information, and a measuring means for measuring biological information based on the detection result of the detecting means. [Selection diagram] Fig. 3【課題】複数の生体情報を精度良く測定できる測定装置を提供する。【解決手段】測定装置１００は、測定位置に向けて光を射出する光源２０３と、測定位置にある生体からの反射光、又は測定位置にある生体を透過した透過光を複数の波長に応じて分光する分光手段と、複数の波長に分光された反射光、又は透過光を受光する受光手段と、分光された反射光、又は透過光の受光量の変化を検出する検出手段と、測定する生体情報に応じて光源の発光強度を設定する設定手段と、検出手段の検出結果に基づき生体情報を測定する測定手段と、を備えている。【選択図】図３
