PROBLEM TO BE SOLVED: To provide a sensor determination device which, even when a plurality of load sensors are erroneously arranged, can appropriately grasp the error.SOLUTION: A sensor determination device of a bed includes: a center-of-gravity position calculation section 13 for calculating a center-of-gravity position of a user based on a measured value of a plurality of load sensors S； a sensor position determination section 15 for determining the propriety of an installation position of the load sensors S from relative position relationships between a center-of-gravity position at the time when a load is caused to act on a predetermined inspection position of a sleeping surface, and the inspection position； and an output section 18 for outputting the determination result.
