The utility model relates to a communication interface integrated circuit board suitable for flexible direct current transmission real -time simulation of system platform, the utility model discloses a communication interface integrated circuit board includes core processor and the independent optical fiber interface and the high speed serialization communication interface that are connected with the core processor, and independent optical fiber interface and high speed serialization communication interface all are used for connecting external controller and simulator, and this integrated circuit board is handled each interface through the core processor, guaranteed the synchronism of data, and independent optical fiber interface all adopts ST interface form, has satisfied the demand of different wavelength, different bare headed access control systems. The utility model discloses an unified hardware architecture design for interface arrangement can carry out nimble adjustment according to flexible direct current valve base electron device, and in order to satisfy the demand that the different valve base electron device of producer inserted the real -time simulation platform, the high -speed serial communication interface speed that adopts can reach 5Gbs, and independent fiber communication interface rate reaches as high as more than 100, 000, 000, has guaranteed the communication real -time of whole system.