The invention relates to a FPGA signal processing board, belonging to the technical field of digital signal processing. The processing board comprises one power supply module, four FPGA processing sub modules, one FPGA transmit-receive module, one interconnect chip set module and one FPGA load application module, the FPGA processing sub module and the FPGA transmit-receive module are connected by full interconnect mode, the interconnect bandwidth between every two modules is as high as 1.6 B/s. The processing board can implement the external multiple high speed interfaces and load the DDR SDRAM with capacity of 4GB by PCI bus, Rapid IO bus and source synchronous interface, the storage bandwidth is as high as 10688 MB/s. the FPGA on the board has flexible configuring mode by adopting the DSP+CPLD+NAND configuring combination. The invention is suitable for the condition with harsh signal processing real time performance requirement, such as radar signal processing, image processing and communication base station and so on.