Within a facsimile communication, a moving image communication and a voice data communication, a structured document generation device transforms a main data of communication/non-character data into text data/character data. The structured document generation device also transforms and extracted data from the communication's information into an attribute which is attached to a facsimile data, a moving image data or a voice data, so as to make a document with a structured data with the character data and attribute mentioned above. The communication's information includes an ID of a source address, an ID of a receiving device, a communication time and date, a data type, a data volume and a transmitted information based on a communication protocol. The communication's information is attached to an attribute of the non-character data, which makes it possible to control and process the non-character data as it is the structured document.