Aiming at the problem of poor expansibility and inflexible configuration of Application-Specific Integrated Circuit (ASIC), a general SoC architecture based on software radio is proposed, which has the advantages of high modularity, strong expansibility and flexible software. Compared with the ASIC architecture, the processor, memory, multi-master bus and Direct Memory Access (DMA) are added, and the system integration under the Software Define Radio (SDR) SoC architecture is completed. Simulation verifies that the chip functions normally and the performance is not affected after adopting the architecture, while not significantly increasing clock delay or resource consumption.