A content management apparatus includes: an uploaded content detection unit which detects a content item uploaded to a network service by a user; a management information generation unit which generates management information of: the content item uploaded to the network service by the user; and a content item stored on a device connected to a network; an uploaded content information storage unit which stores the management information of the uploaded content item; a home content information storage unit which stores the management information of the content item stored on the device; a home content detection unit which detects a new content item newly stored on the device; and an identification unit which verifies, when the new content item is detected, whether the new content item and the content item whose management information is stored on the uploaded content information storage unit are identical.