A centralized management system for managing maintenance parts of machines at multiple plants includes: a warehouse facility for providing a concentrated storage of the maintenance parts for multiple types of the machines at multiple plants; a necessary parts management device for managing whether the maintenance parts are required for the machine; and a parts shipment management device for determining the maintenance parts to be shipped from the warehouse facility based on management information in the necessary parts management device. The present invention provides a system for managing maintenance parts that allows management costs to be restricted while allowing changes in the status of machines at plants to be handled in a flexible manner.