Irradiating laser light to the suffering inspection body, it is the living body information measurement equipment which measures the state of internal system of the suffering inspection body on the basis of the scattered light which disperses in the suffering inspection internal section, the laser illuminant and the scattered light which laser light radiation are done it absorbs light and intermittent signal amplification means and the signal supply means which intermittently supply the measurement signal to signal amplification means and corresponds to the supply period to signal amplification means of the measurement signal the amplification signal which generate the photoelectricity conversion means which generate the measurement signal which is based on scattered light and the amplification signal which amplifies the signal level of the measurement signalContainment, containment the 1st output means which output this as the 1st signal and the amplification signal which corresponds to the non supply period to signal amplification means of the measurement signal intermittently, this the 2nd output means which as the 2nd signal it outputs and, the 1st signal and the operation output means which operation outputs the information regarding the internal system of the suffering inspection body on the basis of signal subtraction means and the subtraction signal which generate the subtraction signal which responds to the difference of the 2nd signal and, it includes.被検体にレーザ光を照射して被検体内部で散乱した散乱光に基づいて被検体の内部組織の状態を測定する生体情報測定装置であり、レーザ光を出射するレーザ光源と、散乱光を受光して散乱光に基づく測定信号を生成する光電変換手段と、測定信号の信号レベルを増幅した増幅信号を生成する信号増幅手段と、測定信号を間欠的に信号増幅手段に供給する信号供給手段と、測定信号の信号増幅手段への供給期間に対応する増幅信号を断続的に保持してこれを第1信号として出力する第1出力手段と、測定信号の信号増幅手段への非供給期間に対応する増幅信号を断続的に保持してこれを第2信号として出力する第2出力手段と、第1信号と第2信号の差分に応じた減算信号を生成する信号減算手段と、減算信号に基づいて被検体の内部組織に関する情報を演算出力する演算出力手段と、を含む。
