Disclosed is a resource management method by which one or more lender center apparatuses each lend one or more computer's resources to a borrower center apparatus, and which is executed by the borrower center apparatus. The method includes the step of receiving, from each of the lender center apparatuses, resource information on one or more resources, and registering the resource information to a management table, the step of detecting a shortage of one or more computer's resources in the borrower center apparatus, and pinpointing a bottleneck causing the shortage, the step of searching through the management table for one or some of the resources which can resolve the bottleneck, and creating a center list of one or some of the lender center apparatuses which possess the searched resources, and the step of requesting the lender center apparatuses on the center list to lend the searched resources.