To reduce redundant operations from the process of development and design to the process of patenting.

This invention excavation support system includes a first data holding means; a first computer device having a first display means; a first server device having a first data storage means for storing product parts information and the arrangement information of parts; and a second server device having a second data storage means for storing data obtained by converting the parts information and the arrangement information into words, with each of the devices connected to an electric communications line.