PROBLEM TO BE SOLVED: To provide a biological light measuring device, capable of measuring a hemoglobin amount change signal with good reproducibility even when an operator is differed in clinical practice.SOLUTION: A control unit of the biological light measuring device displays a plurality of steps constituting an examination and an execution sequence of the plurality of steps on a display device, and executes the steps according to the execution sequence. The plurality of steps includes, for example, at least one of steps of explaining the examination, urging setting of a measuring probe and receiving setting of a measurement parameter from an operator and a measuring step. The measuring step includes emitting a light to a subject, and detecting the light passed through the inside of the subject.COPYRIGHT: (C)2012,JPO&INPIT【課題】臨床で操作者が異なる場合でも、再現性よくヘモグロビン量変化信号を計測可能な生体光計測装置を提供する。【解決手段】生体光計測装置の制御部は、検査を構成する複数の工程と該複数の工程の実行順番を表示装置に表示させるとともに、前記実行順番に従った工程を実行する。複数の工程は、例えば、検査説明工程、計測プローブ設置を促す工程、および、計測パラメータの設定を操作者から受け付ける工程の少なくとも1以上と、計測工程とを含む。計測工程は、被検体に光を照射し、被検体内部を通過した光を検出する工程である。【選択図】図4