To solve the performance bottleneck of the existing RTI servers in the large-scale simulation, an implementation method based on CORBA and interoperability protocol of hierarchical RTI server is presented. The deployment of federates,local RTI servers and central RTI server is described. The workflow of hierarchical RTI based on CORBA and interoperability protocol is introduced. This method not only solves the bottleneck problem of centralized and distributed RTI servers in the large-scale simulation, and decreases the latency of operation, but also ensures time and space consistency for all federates.