A navigation system according to the present invention includes a control device 1 equipped with an automatic operation management means 10 for, when acquiring an operation guidance display request which is generated by a user's manipulation of an input device 2, making a direct transition to a final operation screen which is required to judge the user's intention among operation screens which are developed to implement navigation, and for combining the above-mentioned final operation screen which is reduced and a corresponding operation guidance to display them on a display device 5.