Abstract: The present invention provides a goods trace information storing method comprising the steps of: acquiring identification information from an RFID (Radio Frequency Identifier) tag in each distribution level by an identification information read mechanism, and acquiring physical property information of goods, where the RFID tag is attached, by a physical quantity measurement mechanism; a comparison determination mechanism's comparing the physical property information with predetermined threshold information and outputting determination information comprising information for indicating whether or not the physical property information is out of a range of the threshold information; and a registration mechanism's making the acquired identification information, physical property information, and determination information correspond to information for identifying the information group, including information for specifying an acquisition time and an acquired distribution level, and storing them in a memory mechanism