Video Wall Controller combines the projector and PC fusion software, using the host to pass the signal to the Video Wall Controller for signal processing to complete the large desktop splicing, multiple signals were passed to multiple projectors for display, so as to achieve the immersive projection effect. Immersive projection has gradually replaced the traditional projection method, by which the display of the oversized picture can better attract the attention of the audience, now immersive projection is more and more appearing in our lives in various places, such as multimedia teaching, museums, science and technology museums, corporate exhibition halls, intangible cultural heritage exhibition halls,etc.