An image processing method includes the steps of: receiving image data from a body-insertable apparatus having a plurality of imaging units that captures an image of inside of a subject and generates image data and an identification information adding unit that adds identification information for identifying an imaging unit that generates the image data to the image data displaying a list of the selected image data by the identification information and switching image data to be displayed in the list displaying step from image data of the one identification information being displayed to image data of the other identification information.
