Heavy metals contaminated soils can be remediate by chemical, physical and biological methods. Phytoremediation is one of the bioremediation methods of heavy metals contaminated soils that is included the use of specific plant-based techniques for absorption, accumulation, elimination and stabilization of toxic metal pollutants. The efficiency of heavy metals extraction by plants used in this technology is dependent on factors such as amount of biomass produced by plant and metal elements bioavailability. Some microorganisms existent in plants rhizosphere such as plant growth promoting bacteria and mycorrhizal fungi cause to increased plant growth and their biomass and consequently elimination of soil metal pollutants by mechanisms such as phytohormons production and nutrients supplying for stressed plants. On the other hand, many rhizobacteria are resistant to heavy metals and by secretion of organic acids can solubilize unavailable forms of heavy metals and consequently increasing of their absorption by resistant plants. In this paper, we have a short review on the role of rhizospheric microorganisms in increased efficiency of heavy metals phytoremediation.