Abstract:In order to study the petroleum pollution in the soil of Laojunmiao oilfield, the oil concentrations of the soil samples from three layers (surface, substrate and understratum) in four sample districts in Laojunmiao oilfield were analyzed by Soxhlet Extraction-Gravimetric method, and then the transferring of oil pollutant in soil was studied. It is shown that the petroleum pollution in the soil of Laojunmiao oilfield is serious with a maximum oil concentration of 83601 mg/kg. Moreover, because of the strong adsorption of oil pollutant by ocher, the oil pollutant is mainly distributed in the surface layer of soil and the oil concentration of soil increases with the decrease of the diameter of soil granule.