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As a core technology of Intet of Things (IoT),Wireless Sensor Network (WSN) has become a research hotspot recently.More and more WSNs are being deployed in highly mobile environments.The fast moving sensor nodes bring significant challenges for the routing decision.In this paper,we propose an efficient logical location method,and designe a mobility estimating metric and derive a novel Green Mobility Estimationbased Routing protocol (G-MER) for WSNs.We also set up a full framework to evaluate its performance.Simulation results illustrate that G-MER achieves a fairly better performance in terms of broadcast times and link failures than AODV.What’s more,it decreases the mean hops by about 0.25 and reduces energy consumption by about 10％ during the whole experiment.All the results show that G-MER can be effectively used in fastmoving and limited resource scenarios.