Following the construction experience of the USA cyber range，this paper describes the target and the capacity of the range architecture on the basis of analyzing the current domestic situation on internal cyber range. Five key technologies involving the construction of the range are analyzed. The compositions and functions are designed on principles of unified planning，advanced technology，versatility and extensibility. According to the actual demand and resource status，the technologies of cloud and virtualization are adopted to design for the equipment network security range hierarchically. The interfaces of simulated and real equipment are reserved for the demand of all kinds of tests.