Human body state and the operational decision system which use the light information are disclosed. The aforementioned human body state decision system, generating the light information, is installation possible in light information transmission module and 1 regions of the human body which it outputs, the description above which changes light information transmission module and the description above which at least have one which at least possesses one cutting end light information transmission route at least the description above of one light information transmission route at least on the basis of the interval of one cutting end it calculates the optical transmission ratio of one light information transmission route at least, it is possible to include with the human body state analysis module which decides the state change of the human body. In this case, the description above at least the aforementioned either of one light information transmission route to change either of the aforementioned human bodies on the basis of the change of circumference of 1 regions it is possible the interval of one cutting end.光信号を用いた人体状態および動作判定システムが開示される。前記人体状態判定システムは、光信号を発生して出力する光信号送信モジュールと、人体の1部位に装着可能であり、少なくとも一つの切断端部を有する少なくとも一つの光信号伝達経路を備える光信号伝達モジュールと、前記少なくとも一つの光信号伝達経路の前記少なくとも一つの切断端部の間隔に基づいて変化する前記少なくとも一つの光信号伝達経路の光伝達比率を算出し、人体の状態変化を判定する人体状態分析モジュールとを含むことができる。この際、前記少なくとも一つの光信号伝達経路の前記いずれか一つの切断端部の間隔は、前記人体のいずれか1部位の周長の変化に基づいて変化させることができる。
