PROBLEM TO BE SOLVED: To detect an abnormality in driver's physical condition at an early stage before an abnormal condition develops.SOLUTION: A driver's physical condition detecting device for detecting a physical condition of a driver who drives a vehicle includes: a vehicle detecting unit for detecting a change in the movement of a traveling vehicle; a driver detecting unit for detecting a change in the movement of driver's head; and a physical condition determining unit for executing determination processing whether the driver's physical condition is abnormal or not on the basis of the change in the movement of the head relative to the change in the movement of the traveling vehicle.SELECTED DRAWING: Figure 1【課題】異常状態が進行する前の早い段階で、運転者の体調の異常を検出する。【解決手段】車両を運転する運転者の体調を検知する運転者体調検知装置であって、車両の走行中の動きの変化を検出する車両検出部と、運転者の頭部の動きの変化を検出する運転者検出部と、走行中の動きの変化に対する頭部の動きの変化に基づき、運転者の体調が異常であるか否かの判定処理を実行する体調判定部と、を備える。【選択図】図1