As the high-pressure pumps and the special-made water screen generator sprays the water from down to up in high speed and atomizes the water, the movie appears.For the water screen movie, we have appropriative projector that can cast the specially-made videotape on the “screen”. The fan screen and the night sky are all melt into one, when the characters come in and out of the picture, it looks as of the characters are taking off to the sky or falling from the sky, creating a feeling of illusory, which is fascinating. The projector is made up of mechanical devices, control carriers, terminal port, software, time signal and DMX512 connector. Such projector is controlled by optical sensor whose accuracy is high. The three control methods are programming control, direct control and practical process control. The screen is about 20m in height and 30m to 50m in width. All kinds of VCD disks or specially-made water screen movies can be played on the screen, the effects are fancy and novel and have can be the means for publicity, every squares and wide water can have such water screen. It is suitable for big festival, large-scale squares, theme parks and so on.