Interactive projection screen system consists of three parts: motion image collector, a data processor and image display: (1) motion image acquisition to achieve the participants image and motion data capture and collect. (2) data processor is realize real-time interaction between participants and all kinds of effects of main part, the participants in the acquisition of the image and motion data analysis and processing, and the realization and processor inherent in data synthesis. (3) the display of real-time interactive effects is displayed.. The operation principle of the system first by capturing device (sensor) of target image (such as participants) to capture, and then by the image analysis system, resulting in objects is captured the action, the action data combined with real time image interactive system, between the participants and the screen in close connection with the interactive effects. When the visitor enters the scene, the system will make the corresponding interactive reaction, and the real interaction between the visitors and the images projected onto the floor is achieved..