Play by 4 d cinema film with stereo effect, usually using digital movie special effects technology produced. Digital stereo film and we are familiar with three-dimensional principle is the same, but the production process and achieve the effect is different. Because it is through the computer software modeling, rendering, generated by the digital film can use general camera inaccessible reservation and shooting Angle, content also is due to the high temperature and high pressure, more dangerous or not in the same space and time of artificial hard even can not realize the event, such as volcanoes, forest fires, earthquakes, underwater adventures, a space Odyssey, prehistoric dinosaurs animals and so on. In addition, with the development of digital film technology, digital film in the environment, the role has portrayed be spurious,