The centre computer is very important in the whole radar system, and as the core equipment, which is the realization in function and performance of radar whole machine. Besides the self-developing application program, the most important index for centre computer is the software and hardware platform. With the development of technology, the performance of the software and hardware are rapidly improved.. The performance differences of hardware and software at home and abroad are analyzed in this paper, and through the actual application, the feasibility of the domestic changing is proved.