Abstract: To provide an electronic-book display processing program for displaying a passage of an electronic book which has the same content as a paper book on a display portion of a terminal device based on electronic book data including reflowable document data, which allows a computer to execute a passage specifying function which extracts part of the electronic book data including data corresponding to a passage written in a page of the paper book corresponding to a page number based on the page number of the paper book designated by the user through an operating portion of the terminal device, a page-number specifying function which specifies a page number of a page of the paper book in which at least part of display information is written from the electronic book data based on the display information of the electronic book displayed on the display portion.