An electronic device is provided. The electronic device includes an avatar and an operating method thereof. The electronic device includes a display, and at least one processor operatively coupled with the display, wherein the at least one processor is configured to detect a face in at least one image, determine a user avatar corresponding to the detected face, determine a region of both the face and at least one object related to the face, determine a size of the user avatar based on the determined region, and control the display to display the user avatar on the display by rendering the user avatar based on the determined size of the user avatar.