The Train Communication Network (TCN) is widely used in highspeed train. However, its core technology - Multifunction Vehicle Bus Controller (MVBC) is owned by foreign companies, which limits the development of high-speed railway in China. Based on the principle of Multifunction Vehicle Bus(MVB), and analysis of real-time protocol and functions of bus controller to be achieved, this paper describes the design of MVBC which is divided into seven modules, Encoder, Decoder, Telegram Analysis Unit(TAU), Configuration Memory, Traffic Memory Controller(TMC), Arbitrator and Microprocessor Control Unit(MCU). And then it designs each module with VHDL in the integrated development environment of Quartus Π developed by Altera Company. A new MVBC is developed with FPGA. The test shows that it can take place of MVBC Application Specific Integrated Circuits (ASIC).