PROBLEM TO BE SOLVED: To precisely measure multiple pieces of biological information.SOLUTION: A biological information measuring apparatus 10 includes a light emitting element LD1 and a light emitting element LD2 that emit light having mutually different wavelengths, and a light receiving element 3. The biological information measuring apparatus 10 controls the periods of light emission from the light emitting elements LD1 and LD2 such that the period of light emission from the light emitting element LD2 is shorter than the period of light emission from the light emitting element LD1, and preferably the light emitting element LD1 successively emits light during the halt of light emission from the light emitting element LD2. The biological information measuring apparatus 10 measures multiple pieces of biological information based on the amount of light received at the light receiving element 3 multiple times from the light emitting element LD1 during each period of light emission from the light emitting element LD1 and on the respective amounts of light received from the light emitting element LD1 and the light emitting element LD2.SELECTED DRAWING: Figure 9【課題】複数の生体情報を精度よく測定する。【解決手段】互いに波長の異なる光を照射する発光素子ＬＤ１及び発光素子ＬＤ２と、受光素子３と、を備える生体情報測定装置１０は、発光素子ＬＤ１の発光期間より発光素子ＬＤ２の発光期間を短くすると共に、望ましくは発光素子ＬＤ２が発光を停止している期間に発光素子ＬＤ１が連続して発光するように、発光素子ＬＤ１及び発光素子ＬＤ２の発光期間を制御し、発光素子ＬＤ１の発光期間毎に受光素子３で複数回受光した、発光素子ＬＤ１による光の受光量と、発光素子ＬＤ１による光の受光量及び発光素子ＬＤ２による光の受光量とから、複数の生体情報を測定する。【選択図】図９
