The present invention relates to a terminal and a method of operating therefor. A terminal obtains an input for selecting at least one image, generates at least one collage wallpaper including a color area displaying at least a partial area of the entire area with single color and an image area displaying the at least one selected image on the remaining area of the entire area, and generates a collage wallpaper set including the generated at least one collage wallpaper. The terminal can display the at least one collage wallpaper included in the generated collage wallpaper set.