Abstract: Plants can maintain Na+ homeostasis to increase salt resistance by several mechanisms, which include limiting Na+ influx, strengthening Na+ efflux, lessening Na+ transport to the shoot, distributing Na+ of shoots to particular parts (e.g., old leaves), secreting Na+ outside the leaves by a salt-secreting structure or transporting Na+ to the root by phloem recirculation. This paper introduces advances in research into the roles of Na+ transportation in salt resistance of plants at the whole plant level.