Abstract: A dynamic network topology evolution model was established based on multilayered clusters. Moreover, the routing policy was studied from the two aspects of MEO working independently and GEO/MEO working collaboratively. The three-level information transmission and distribution mechanism was proposed via employing cluster manager, cluster head and cluster member. Finally, through the cluster division and boundary nodes selection among the sub-clusters, the scheme achieves the inter-cluster topology change shielded from each other, independent networking routing and sub-cluster information exchange, as well as a low network management complexity and routing calculations.