Abstract: A dynamic routing-based reconfiguring and recovering algorithm for LEO satellite systems employing ISL is proposed, by which a designated satellite with management responsibilities is available to check out as soon as possible a ranked list of failed network links and further, detect accurately the failed links through a quick and autonomous testing. Then, it will reconfigure the network topology. After the failed links have been repaired, the satellite with management responsibilities will recover all of them in network topology. The simulation in satellite networks shows that this method has the features of real-time and accuracy especially it will occupy a few bit of extra bandwidth even requires no bandwidth.