Provided is a physical condition detection device capable of detecting in detail a physical condition of a subject on a bed based on detection by a load sensor. A physical condition detection device for detecting a physical condition of a subject on a bed is provided under the bed or a leg of the bed, a plurality of load detectors for detecting a change in load according to the breathing of the subject, and the detection A physical condition detection unit that determines a direction in which the body axis of the subject extends and / or an arrangement of the head of the subject based on the change in the applied load. [Selection] Figure 1【課題】荷重センサによる検出に基づいてベッド上の被験者の身体状況を詳細に検知できる身体状況検知装置を提供する。【解決手段】 ベッド上の被験者の身体状況を検知する身体状況検知装置は、ベッド又はベッドの脚下に設けられ、被験者の呼吸に応じた荷重の変化を検出する複数の荷重検出器と、前記検出された荷重の変化に基づいて被験者の体軸の延びる方向及び／又は被験者の頭部の配置を決定する身体状況検知部とを備える。【選択図】図１
