Site access method enables to use support system site with a sense that the user accesses site which he or she uses daily when access is made via the accounting office site. The method enables the user to recognize the use of the support system on the side of the site which the user daily uses and enabling the side of the service provider to enjoy the benefit obtained through the expansion of usage by new users. When access to the support system site from the user terminal is access via the accounting office affiliated with the site, the support system site generates page information for the accounting office by changing the name of the service provider of the page information of the support system into the accounting office name or the like to transmit this generated page information to the user terminal of the accounting office site.