Abstract: With alfalfa(Medicago sativa), paddy rice as test plants,and with pollutant level,specific bacteria,fungi, orga nic fertilizer as control factors,the bioremediation of mineral oil, polycyclic aromatic hydrocarbons (PAHs) in soils with two plant species was conducted.The results showed that the degradation rate of mineral oil was promoted by fertilization in alfalfa soil,but not in paddy rice soil.The degradation rate of total PAHs (11 PAH listed in USEPA) was increased by fertilization both in alfalfa, in paddy rice soil,and the promotion effect of fertilizer was better in paddy rice soil than in alfalfa soil.The fertilization rate was positively related to the rhizospheric indigenous fungi, bacteria's CFU in affalfa soil,but only to the indigenous bacteria's CFU in paddy rice soil.The fungi, bacteria's CFU in both test soils had no positive relation with the amount of specific bacteria, fungi spiked.The degradation rate of 3 ring PAHs was inhanced in both alfalfa, paddy rice soil by fertilization,and the effect was stronger in paddy rice soil than in alfalfa soil.However,fertilization had no positive effect on the degradation of 4-ring PAHs.