There are many biological methods of soil reclamation with oil pollution. Bioremediation of PAH’s-contaminated sites were largely carried out by the stimulation of microorganisms already present in the contaminated site can of difficulties with bioaugmentation processes. Successful bioaugmentation requires not only a catabolically active inoculum but also a microbial strains or consortium that can survive well in the target environment. PAH’s are often presents in a mixture of compounds in the contaminated environments, which leads to various interactions among PAH mixtures by PAH-degrading bacteria, such as cometabolism, inhibition, induction. Biodegradation by the microbial community is the primary removal mechanisms for PAHs from soil and rhizosphere and bacteria constitute the most important group of soil microbes involved in the biodegradation of PAH’s. Phytoremediation (phytoextraction, phytostabilization, phytotransformation) use of green plants to bioremediate polluted sites, was found to be a feasible approach for the in situ clean up of the soil surface contaminated with PAH’s and disel fuel. A more rapid biodegradation of PAH’s and diesel fuel in the root zone is thus important for improving phytoremediation and bioaugmentation of fuel - polluted field sites.