1. An information collecting system that is connected to, via a network, a data generating device which adds attribute data to generated job-site data and which transmits the job-site data with the attribute data to the network, the information collecting system comprising: a dictionary storing unit that stores a dictionary which defines a kind of each supporting information to be added to the job-site data; a database that stores pieces of supporting information of various kinds and various contents; a searching unit that searches each supporting information from the database in accordance with the dictionary; and a primary reconfiguring unit that adds the searched supporting information to the job-site data in addition to the attribute data to reconfigure event information, the supporting information being background information that includes at least one of pieces of information respectively indicating an editing assist material which is necessary for editing the job-site data, a comparison target data to be compared with the job-site data, an analysis assist material which affects an analysis and an evaluation assist material which affects an evaluation on an analysis result.