A method of synchronizing a modification among displayed screens and an electronic device are provided. The electronic device includes a first display, a memory to store instructions, and at least one processor coupled to the memory. The instructions, which, when executed, configure the at least one processor to control the first display to display a preview image of each of a plurality of screens including a first screen, receive a first user input for modifying a background image of the first screen in an area in which the preview image corresponding to the first screen is displayed, modify a background image of each of the plurality of screens by synchronizing a modification corresponding to the first user input among background images of the plurality of screens, and control the first display to display the preview image of each of the plurality of screens including the modified background image.