An object of the present invention is to provide a human condition detecting apparatus for highly accurately detecting a human condition, without any burden. A human condition detecting apparatus of the present invention is characterized by comprising a first stimulus applying device 10 for applying a stimulus for acquisition of reference information to a subject a second stimulus applying device 10 for applying a stimulus for acquisition of condition information to the subject a stimulus reaction detecting device 20 for detecting reactions of the subject to the stimulus applied by the first stimulus applying device 10 and to the stimulus applied by the second stimulus applying device 10, by an ecological index of the subject and a condition determining device 41 for determining a condition of the subject, based on a comparison between the reaction of the subject to the stimulus applied by the first stimulus applying device 10 and the reaction of the subject to the stimulus applied by the second stimulus applying device 10.