Abstract: The present invention provides a subtitle data editing method that simplifies the work of inputting subtitles to be displayed on contents such as moving images and facilitates quick and efficient editing work. By accepting a predetermined line feed operation twice consecutively in a state wherein a cursor is present in a subtitle input field in which the subtitle content is input, a subtitle input field is separated to be displayed on screen separations before and after the cursor. By accepting a predetermined line feed operation in a state where the cursor exists at the beginning of the second and subsequent lines, the line and the line directly above are separated and the subtitle input field is divided and displayed on screen, when the subtitle input field in which the subtitle content is input is a plurality of lines.