With the development of communication system, the requirement of signal processing is improved, traditional chip has been difficult to meet the requirements of high-speed processing. FPGA is widely used in parallel processing capability, high integration, reconfigurable system etc. This paper design the SOC function with embedded ARM based on high performance FPGA, combined with CPLD, DSP, ADC technology, including SDRAM, FLASH memory and other peripheral circuits, constructed an intermediate frequency digital signal processing platform. Through engineering practice, the system design is reliable and the operation is stable.