Abstract: To investigate the contribution of the soil macrofauna on the dissipation of polycyclic aromatic hydrocarbons (PAHs) in rhizosphere soil,pot experiments were carried out to study the effect of earthworms (Pheretima sp.) working on pyrene-polluted soil being remedied by Festuca arundinacea.The results showed that earthworms' activities promoted the roots growth of Festuca arundinacea in soils (with Pyr concentrations ranging from 20.24 to 321.42mg·kg-1),and the root/shoot ratio was apparently increased.Seventy-two days after earthworms were introduced,the Pyr in the soils with the plants was 69.91% removed,which was 9.85% greater than that was without earthworms,and 50.67% greater than in non-vegetated soils without earthworms.Among all possible pathways,the plant-microbial interaction was proved to be most efficient in Pyr degradation,and it accounted for 44.08% of the total removal with earthworms' activities,which was 6.53% higher than the soils without earthworms.Besides the accumulation of Pyr in grass was found to be reduced by incubation of earthworm in soils,thus the ecological risks of Pyr could be relieved.It was suggested that introducing earthworms into the soil-plant system could be a feasible way for establishing high efficient phytoremediation of soil polluted by PAHs.