In an electronic device and a method for operating the electronic device according to various embodiments, an electronic device may include a foldable housing including a hinge, a first housing connected to the hinge, and a second housing connected to the hinge and configured to be foldable with the first housing about the hinge, a display including a bent area in a state in which the first housing and the second housing are folded with respect to each other, a processor disposed in the first housing or the second housing and operatively connected to the display, and a memory operatively connected to the processor, and the memory may be configured to store instructions that, when executed, cause the processor to control the electronic device to: identify a folding degree between the first housing and the second housing, generate a first image based on mapping data in which the folding degree and characteristics of the first image are mapped, generate a synthetic image of the first image and a second image corresponding to the bent area wherein the generated first image is overlaid in at least a partial area of the second image, and display the generated synthetic image.