Abstract: Aiming at the problem of poor expansibility and inflexible configuration of ASIC, this paper proposes a general SoC architecture based on software radio, which has the advantages of high modularity, strong expansibility and flexible software. Compared with the ASIC architecture, the processor, memory, multi- master bus and DMA are added, and the system integration under the SDR SoC architecture is completed. Simulation verifies that the chip functions normally and the performance is not affected after adopting this architecture, while not significantly increasing clock delay or resource consumption.