PROBLEM TO BE SOLVED: To provide a system which can be readily purchased by consumers and is capable of helping consumers prevent development of serious diseases such as cancer by measuring defecation gas at home.SOLUTION: A system of the present invention includes a subject-side device 6 installed in a toilet room, and a server 12 communicable with the subject-side device 6. The subject-side device 6 includes: a sulfur-containing gas sensor 26 configured to respond to sulfur-containing gas and generate detection data; and a transceiver 56 for transmitting, to the server 12, measurement data including the detection data of the sulfur-containing gas detected by the sulfur-containing gas sensor 26. The server 12 includes: a database configured to cumulatively record the measurement data including the detection data of the sulfur-containing gas detected by the sulfur-containing gas sensor 26 together with a date and time of defecation in association with subject identification information; and server-side data analysis means for analyzing physical health of a subject based on a temporal variation trend of the measurement data cumulatively recorded in the database.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】一般消費者が手軽に購入でき、家庭における排便ガスの測定によって癌等の重大な疾病になってしまうのを未然に防止できるシステムを提供する。【解決手段】本発明のシステムは、トイレ室に設けられた被験者側装置6と、被験者側装置6と通信可能なサーバー12とを含み、被験者側装置6は、含硫ガスに反応し、検出データを出力する含硫ガスセンサ26と、含硫ガスセンサ26により検出された含硫ガスの検出データを含む測定データをサーバー12に送信する送受信機56と、を含み、サーバー12は、被験者識別情報に対応づけて、含硫ガスセンサ26により検出された含硫ガスの検出データを含む測定データを、排便行為の日時とともに蓄積して記録されるデータベースと、データベースに蓄積記録された測定データの経時変動傾向に基づいて被験者の体調を解析するサーバー側データ解析手段と、を含む。【選択図】図2