Provided is a document management system that appropriately performs management of paper documents even in a case where there is a change in the storage conditions and the like of paper documents. A server causes an image forming apparatus to output a management label. A worker enters items necessary for management in this management label, after which the label is attached to a package including paper documents (documents) that is a target of management, and the package is stored in this state. A portable terminal that can capture an image of the management label on the package in a stored state is used. The portable terminal and the image forming apparatus may perform an exchange of data via a network, short distance communication, or the like. This data includes image data (imaging data) acquired by capturing an image of the management label, and storage location information indicating the storage location of the package.