The multi-signal comprehensive display of DLP large-screen splicing wall system includes video signals, computer signals and network computer signals, which can be displayed on the display wall in real time in the form of a window. Video signal formats include PAL, NTSC and SECAM, and computer signals include different resolutions from 640x480 to 1920x1200@60Hz. These signals are connected to the large screen system through a dedicated interface. The network computer signal displays the network image on the display wall through specially developed remote display software. The entire display system can be used for unified centralized display or at the same time for partitioned and distributed management display. The full screen can be used as a unified logical screen to form a super large desktop, used to display large amounts of information application systems, monitoring and management systems, GPS, GIS systems and other application systems, as well as welcome messages, etc. At the same time, the full screen can be divided into multiple functional areas at will, each function The zone will display various signals as required by the application. The partition is virtual. If the user encounters application changes, he or she can change the number of screens in the partition by using simple interface settings without physically changing the wiring. In the traditional splicing system, multiple individual screens are used to form a screen display. Although the same materials are used among each screen, there are objective differences in the thermal expansion and contraction of different screens due to differences in production time and production environment. This causes the entire large-screen display system to undergo some small physical changes after being used for a period of time, which in turn affects the stability and effectiveness of the entire system. The Bitel DLP seamless large screen uses a whole screen, and the production time, materials, and craftsmanship are exactly the same, thus eliminating the above hidden dangers. Because the Pentel DLP large screen uses the entire screen, the physical gaps between screens that exist in traditional splicing are eliminated, so that the entire DLP large screen display image remains intact without artificial segmentation.