The mapping data include a substituting element describing area, a repeat number describing area, and a repeat element describing area. In the substituting element describing area, it is described that the input data is set to which tag in the XML file. In the repeat number describing area, the repeat number specified in the repeat number specifying area is described. In the repeat element describing area, it is described that the tag name of the tag output repeatedly in the XML file. The hierarchy structure data generating system outputs the repeat tag to belong to the same rank as the tag of the repeat element describing area. On putting out the repeat tag, the hierarchy structure data generating system outputs it repeatedly the same number of times as the number of the value of the repeat number describing area.