The present invention relates to a method for providing information on an object excluded in a visual field of a terminal in a form of augmented reality (AR) by using an image inputted to the terminal and information related thereto. The method includes the steps of: (a) specifying the visual field of the terminal corresponding to the inputted image by referring to at least one piece of information on a location, a displacement and a viewing angle of the terminal; (b) searching an object(s) excluded in the visual field of the terminal; and (c) displaying guiding information on the searched object(s) with the inputted image in a form of the augmented reality; wherein the visual field is specified by a viewing frustum whose vertex corresponds to the terminal.