A configuration information management device including: a storage unit that stores a configuration item managed by the device and an item relationship, with respect to configuration items related to a system and item relationships that associate the configuration items with one another, the configuration items and the item relationships being distributed in a plurality of devices; a management unit that, when a first configuration item stored in the storage unit has a feature, creates duplicates of second configuration items that are associated with the first configuration item, do not have a feature and are managed by other devices and duplicates of relationships between the first configuration item and the second configuration items, the duplicates being created in the storage unit; and a search unit that, upon receipt of a search request for configuration information that associates the configuration items with one another by the item relationships, searches for the information about the configuration information with the use of the duplicates created in the storage unit.