An electronic pasting method for managing document information by pasting even electronic data on another data in consideration of printed and written data individually when a paste-from document is pasted on a paste-to document, as well as an electronic pasting updating method for updating pasted data when electronic data is updated after it is pasted. The electronic pasting method uses a detecting unit and a paste information updating unit. The detecting unit detects a paste stroke made over two print sheets filled to denote a user's pasting action with which part or whole of a printed matter of electronic document information is pasted on a printed matter, then detects the pasting action from a set of paste strokes, thereby obtaining a paste-from document, a paste-to document, and a paste position according to the pasting action detected by the detecting unit. The paste information updating unit updates the e-document, the printed matter information, and the written information according to the above paste information.