In order to solve and meet the requirements of domestic design, a 20-way SRIO x4 high-performance non-blocking fully interconnected switch was designed. Based on the Loongson processor LS2K0500, Fudan Microelectronics FPGA, and the domestic NRS1800 switching chip, the designed switch management software was used to achieve enumeration networking and balanced routing distribution, and the non-blocking performance of the switch was tested. The results showed that the read and write speed of the switch can reach 1 600 MB/s, meeting the localized requirements for SRIO switching.