Aiming at the problem of insufficient bandwidth of radar signal processing, a signal processing platform is designed based on domestic high-performance CPU. Firstly, the hardware board is designed and the hardware test platform is built based on the domestic high-performance 920 module. Secondly, software development environment is built according to firmware, operating system, middleware and compiler software; Next, the specification is written and the signal processing application software is designed by using Vector Signal Image Processing Library（VSIPL）software; Finally, the processing timeliness of signal processing platform is tested based on radar waveform data. The results show that when the number of processing points is large, the improved VSIPL middleware is used for OpenMP multi-thread signal processing, which can greatly reduce the signal processing time, and has certain engineering application value.