The invention relates to a BMCH protocol data transceiver module based on a CPCI bus, comprising a hardware module and an FPGA program, wherein the hardware module comprises an impedance control circuit board, an electronic component, an SCSI50 signal gang socket, a standard CPCI bus connector and a standard 3U Eurocard board card front panel; the impedance control circuit board and the electronic component are the core functional carriers of the invention and are divided into five functional units, i.e. an FPGA unit, a CPCI bus unit, a BMCH protocol transmitting and conditioning unit, a BMCHprotocol receiving and conditioning unit and an assistant unit; and the FPGA program comprises a BMCH protocol data receiver module, a BMCH protocol data transmitter module and a self-checking functional module and is programmed and developed by Verilog HDL. The invention has stable performance and high reliability and can carry out continuous transmission of the BMCH protocol data of large data volume for a long term; CPCI bus data transmission has a DMA function, practical bus transmission rate can reach 80MB/s, and no frames are lost by high-speed continuous transmission; and the BMCH bus signal has strong driving capability and long transmission distance. The invention has simple structure, low cost and convenient use.