An image recognition device of the invention includes an image reading means for reading image information from a manuscript, discriminating a specific mark in which plural marks are arranged from image information. The image recognition device includes an extraction means for extracting marks included in the image information, a distance calculating means for calculating distances between marks, and a discrimination means for determining that there is a specific mark in image information when distance between the marks correspond to distances between marks of the specific mark as well as there is not a mirror-image relationship between positions of marks and the specific mark.