Interface board based on rapid periphery components interconnection and method for switching main-control board

The invention relates to an interface board based on PCI Express, which comprises: Endpoint and a bus connector connecting at least two main control boards and Endpoint via PCI Express bus, wherein said connector comprises an address projection module and a projection separate module, while the address projection module is used to build and maintain the address projection between Endpoint and at least two main control boards, and the address separate module is used to separate and recover the address projection between Endpoint and main control board. With said invention, when switching the main control board, the switch of PCI Express bus will not be changed, but only change direction of service data inside the board devices, to change the hard switch into soft switch, to improve the stability of main control board switch.