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As to the status that the form relatively simple and lack of innovation for water as decoration in traditional method , this paper describes a novel digital graphic water curtain system, which based on the ARM architecture and combined with the body sensing, wireless transmission and other functions. It can display graphics, text that water as the medium by controlling the solenoid valve open / close precisely. Meanwhile, it developed a free-fall image compensation algorithm and created the image compensation table in the system, Graphics and text can be well demonstrated in the area that human interest by compensation to the original image. the system compensation can achieve good results as to graphic of 64 × 64 pixel in 1.26m × 1.26m display area in the experiment.The system comprehensively considered performance, cost and other factors, has a strong innovative and practical value.