In view of the current software radar technology, this paper puts forward the “center+terminal” system design thought, according to the definition and connotation of the new technology of the software radar. And based on this thought, we put forward a set of hierarchical soft and hardware system structure of the radar information processing center, which accords with the open architecture design idea, and we put forward the function, content, implementation approach and key technology of each layer. And, we analysize the software radar information processing center real-time capability and put forward the corresponding solutions. Finally, the real-time design is verified.