1. A method for providing a User Interface (UI) service in a multimedia system including a display device, a UI server and a UI client, comprising: receiving, by the display device, UI data from the UI server; abstracting UI data that is structuralized on an object-by-object basis and corresponds to an input from the UI client; creating adaptive UI data by reflecting a UI environment of the display device, in the abstracted UI data; and displaying the created adaptive UI data on the display device.