Multimedia electronic sand table model by combining local, road traffic and other sandbox and can Yan multimedia model control systems combine to achieve a new, interactive digital media, through the touch screen, PDA, laser pointer and other visitors to the model described in the scene to interact understanding, combined with the big picture, animation, video information visitors can experience the detail and close-round development of the region. Applications Recommended: galleries, museums, exhibition halls and other planning museum entrance hall and pavilion in a prominent position