1. An object recognition device of an automotive vehicle, comprising: a positioning part including a microcomputer, which detects a position of the vehicle in accordance with a predetermined method; a positioning-accuracy computing part including a microcomputer, which computes a positioning accuracy in detecting a position of the vehicle; a storing part including a storage medium or a recording medium, which stores beforehand positional information of an object on a road to be recognized by the vehicle; a recognition-range part including a microcomputer, which sets a recognition range of the road of the object to be recognized, based on the position of the vehicle detected by the positioning part, a position of the object stored by the storing part, and the positioning accuracy computed by the positioning accuracy computing part; and an object recognition part including a camera, which recognizes the object for the recognition range set by the recognition-range setting part; wherein the positioning-accuracy computing part is arranged so that a level of the position accuracy, computed at a time of adjusting of the detected position of the vehicle by the positioning part based on a recognition result of the object, decreases in accordance with an increase of a movement distance of the vehicle.