Outdoor display screen has the characteristics of large area, bright colors, bright subject, novel design, vivid image, simplicity and liveliness. Advertising image is prominent, easy to attract the attention of pedestrians, and easy to remember. In addition, outdoor advertisements often give visual stimulation to the audience inadvertently; There is no compulsion, information is easy to be recognized and accepted, and outdoor advertisements are generally published for a long time, which has a cumulative effect on regional performance.