An endoscope system has an insertion portion, a front-view observation window that acquires a first object image, a side-view observation window that is provided in the insertion portion, and acquires a second object image, a video processor that generates a signal of an image, a setting storage section that records information on a deviation amount concerning a deviation, and an image processing section that performs, for the image, processing of changing disposition of at least either the image of the object in the first object image or the image of the object in the second object image in accordance with the deviation amount, and aligning a position of the image of the object in the first object image, and a position of the image of the object in the second object image with each other.
