An image information processing system includes an image database storing image data for matching of a captured object for matching in association with identification information including a name of the captured object, an image acquiring unit acquiring image data, a search target input receiving unit receiving selection of a search object from the image data, an image search processing unit that calculates the degree of similarity between the search object and the captured object, and searches for image data for matching, a display processing unit displaying the search result, and a search result processing unit that receives a selection input from a user to the search result, and stores the image data acquired by the image acquiring unit as image data for matching to the image database in association with the identification information of the search result of which the selection input from the user has been received.