A parts list system includes a CAD section and a parts list section. The CAD section generates a CAD figure of a part included in an apparatus based on design reference data, and extracts a part number of the part, configuration part numbers of configuration parts of the part and attribute data from the CAD figure. Here, the design reference data is reference for design. The attribute data indicate properties of the part and the configuration parts. The parts list section generates the parts list based on the part number, the configuration part numbers and the attribute data from the CAD figure and the design reference data. Here, the parts list relates the part number, the configuration part numbers and part data. The part data indicate properties of the part and the configuration part. Then, the CAD section modifies the CAD figure based on a modification command showing a modified design, and extracts the part number, the configuration part numbers and the attribute data from the modified CAD figure. The parts list section modifies the parts list, based on the part number, the configuration part numbers and the attribute data from the modified CAD figure.