Based on the analysis to the existing forwarding strategy and nodes movement characteristics

proposed a new routing algorithm

named Delayed Spray and Wait(DSW).The applied scenarios are assumed to be situations that mobile nodes move along existing path.The contribution includes adding a delay period

which can effectively reduce the unnecessary relay package in the network.The simulation result shows that this algorithm achieves better delivery rate and less relay package numbers in appropriate scenarios

which has practical significance in saving nodes energy and avoid congestion.