A user interface (UI) generating apparatus includes: an object recognition device configured to photograph a front or surroundings of a moving device and to recognize a real object from a photographed image; an image generator configured to create a virtual object for driving guidance of the moving device to generate an augmented real image obtained by composing the virtual object with the photographed image; and a display device configured to display the augmented reality image, wherein the image generator creates a virtual object that is changed in conjunction with a speed of the moving device, and creates a reinforcement virtual object capable of compensating the real object based on characteristics of the real object.