The present invention relates to a large-scale information communication network real-time simulation analog system. The system comprises a real network element and a test device, an NFV/SDN device and network simulation system, a network simulation system and an information system. The real network element and the NFV/SDN device and network simulation system commonly form a real network topology,the NFV/SDN device and network simulation system is internally provided with a client virtual machine, the test device and the information system are connected with the real network topology, and thereal network topology is connected with the client virtual machine through the network simulation system. The large-scale information communication network real-time simulation analog system utilizethe connection of the physical network and the network simulation software to disperse large-scale network simulation DES into a plurality of simulation software so as to achieve large-scale network real-time simulation analog by employing few hardware resources.