PROBLEM TO BE SOLVED: To provide a human body supporting device which appropriately supports a user being an object for supporting by using air cells to distribute a pressure for preventing continuance of a compressed state of a body surface and discriminates a state of the supported user on the basis of a change of the pressure of the air cells to promote a quick response to abnormality or the like of the user.SOLUTION: A human body supporting device includes a pressure receiving part formed by juxtaposing a lot of air cells which inflate and deflate by supplying and discharging air and shares and supports a body of a user who is placed on by the respective air cells accompanied by a change of an internal pressure due to the supply and discharge of the air. The change of the internal pressure of the air cells while air is not supplied and discharged is detected by a signal processing part 45, and a state of the user appearing as the change of the pressure is analyzed. Thereby, information on the state of the user is appropriately obtained by detecting the change of the internal pressure of the air cells without using a special mechanism. Further, since the state of the user can be quickly grasped by other people through notification by notifying means 80, the human body supporting device can be utilized to respond in nursing care or the like to the user in the event of abnormality.
