An electronic display device includes a storage device for storing an image file, a display screen for showing the image file, a positive evaluation button, and a statistical program. The electronic display device is in communication with a social website. When the positive evaluation button is pressed down, a positive evaluation signal is generated. The statistical program has a preset evaluation threshold value. The statistical program generates an evaluation value according to the positive evaluation signal. If the evaluation value is greater than or equal to the evaluation threshold value, the image file is transmitted to the social website.