As the name implies, the arc screen digital sand table displays the digital content through the combination of arc metal projection screen and sand table. The novelty brought by ordinary projection screen is not as good as the arc screen digital sand table, and the display image is not as shocking as the arc screen digital sand table. The arc screen digital sand table uses projection fusion technology to process the images projected by multiple projectors, and demonstrates the arc screen and physical sand table in two directions, which can fully show the location characteristics.