Building of the National Security Pre-Warning System

National security is a foundation which a nation has been existing and developing. Building a national security pre-warning system which bases on new international situations and national security traits is a important measure by which many nations will safeguard national sovereighty and interests. The theory gist the system based on will be analysed from new point of view.The paper will put forward national security factor's levels and their interactional mathematics model; and will summarize briefly the system's function and characteristic; and will show emphases on the building plan and task and list of the system.