Abstract: In the large scale network, a logical synchronous network should be setup automatically at running time in order to synchronize the clocks of the nodes. To put nodes into logical synchronous network properly, a efficient synchronous resource should be selected. The nodes' clocks precision, stability, capability, realtime loads, and the structure of the network are key aspects for selecting synchronous resources. Strategy Based Synchronous Resource Selection Algorithm (abbreviated as SS) makes its decision by measuring the real-time performance of the nodes and the given stratum. The experiments show that SS can select the proper resource providers from the intended candidates and has better porformance than the usual FIFS algorithm.