A grasp state judging system capable of satisfactorily judging the grasp state in which an object to be grasped is held by grasping means. The grasp state judging system is characterized in comprising a plurality of RFID tags that are mounted on an object to be grasped and that transmit the corresponding position ID; a plurality of RFID antennas (14) that are mounted on a glove (10) and that receive the position IDs; a grabbing pattern storage unit (48) for storing a condition for the position IDs received by the RFID antennas (14) with respect to the grasp states in which the object to be grasped is held by the glove (10); and a grasp state judging unit (44) for judging the grasp state in which the object to be grasped is held by the grasping means on the basis of the position IDs received by the RFID antennas (14) and the conditions stored in the grabbing pattern storage unit (48).