A digital document management system is capable of guaranteeing that a partial correction has been made according to a proper procedure and achieving a third-party certification of the validity of the guarantee. The digital document management system manages document information created in a digital form, and includes partial identification information generation section that generates partial identification information that represents, in an identifiable manner, respective parts of the document information. A partial correction information generation section generates partial correction information which is information related to a correction history of a corrected part in the case where any correction has been required for the document information; and an original document information management section manages the document information, partial identification information, partial correction information, and prescribed policy information in an associated manner.