Due to building or terrain shielding and other factors, node disconnections often occur in distributed ground tactical mobile Ad-Hoc combat units, resulting in network splitting, the combat mission can’t be carried out well, and the network survivability is low. Therefore, a new way of supervision of network topology based on topological robot is proposed, the topological robots periodically send topology detection messages to collect topology state, calculate the importance of nodes, the position of the topological robot with the least importance is actively adjusted to optimize and reconstruct the current network topology, thus improve the network invulnerability. The importance of network nodes is mainly measured from three aspects: network splitting influence, neighbor chain breaking influence and shortest path interruption influence. In order to measure the performance improvement brought by topological robot, the network aggregation index is used to measure the performance improvement