PROBLEM TO BE SOLVED: To provide a sleep disorder inspection device which allows a subject to easily sleep in a natural state, and which facilitates long-term evaluation (evaluation of every day).SOLUTION: A sleep disorder inspection device 1 comprises: a load detection unit 5 on which, plural pressure sensitive elements 17 capable of outputting a load signal indicating a load by a subject who lies down on one's side, are disposed in a plane； and a midway awakening detection unit 9 for acquiring the load signal and detecting midway awakening of the subject under a condition that the number of the pressure sensitive elements 17 whose change amount of the load per unit time is equal to or more than a predetermined threshold or an area occupied by these pressure sensitive elements 17 exceeds a predetermined upper limit value.【課題】被験者が自然な睡眠に入り易く、長期的な（連日の）評価が容易となる睡眠障害検査装置を提供する。【解決手段】横臥した被験者による荷重を表す荷重信号を出力可能な感圧素子１７を面内に複数配置した荷重検出ユニット５と、荷重信号を取得し、荷重の単位時間当りの変化量が所定の閾値以上である感圧素子１７の数、又はその感圧素子１７が占める面積が所定の上限値を超えることを条件として、被験者の中途覚醒を検出する中途覚醒検出ユニット９と、を備えることを特徴とする睡眠障害検査装置１。【選択図】図１
