Abstract: A method and a device for establishing an information communication network system structure, as well as a server and a router. The method includes the steps of after establishing an initial service route, utilizing the server to periodically acquire current network resource configuration information and flow rate state information transmitted by each router node, and generating network resource view and network flow rate view; utilizing the server to acquire current real transmission performance of the initial service route according to the network resource view and the network flow rate view; including current real transmission performance and current business transmission requirement, and generating a reconstruction order when current real transmission performance does not match current business transmission requirement.