Method and apparatus for displaying augmented reality contents are disclosed. The method may include controlling a camera to scan an environment in view of a user, identifying a set of surfaces in the environment for displaying user interface windows according to characteristics of the environment, prioritizing a set of augmented reality contents for display with respect to the set of surfaces in the environment, and displaying the set of augmented reality contents on the set of surfaces in a display. Characteristics of the environment comprise at least aspect ratio of the set of surfaces with respect to the set of augmented reality contents to be displayed, and/or background color of the set of surfaces with respect to the set of augmented reality contents to be displayed.