A display processing apparatus and a display processing method displays a lesion color mark displayed as a mark by arranging a vertical line expressed in a color depending on a lesion for each piece of video horizontal in a time series on the display screen for each type of lesion by the display processing apparatus for displaying image information (observation image, thumbnail images, image bar, lesion color mark) about plural pieces of video obtained by capturing with time at a plurality of positions by a capsule endoscope implemented in a test subject as superposing and displaying in an image bar a vertical line expressed by an average color calculated for each piece of video horizontally in a time series on a display screen as a bar.
