Abstract: Polycyclic aromatic hydrocarbons （PAHs） in soils around a steel mill were investigated and examined.Results show that PAHs residue in this area ranged between 312.2 and 27 580.9 ng·g^-1.The PAHs with more than 4 rings were the main pollutants,especially pyrene,chrysene,fluoranthene,benzo（a）pyrene,anthracene,phenanthrene,benzo（a）anthracene,benzo（k） fluoranthene,indeno（1,2,3-cd）pyrene,benzo（g,h,i）perylene,of which the contents were closely related to organic matter of the soils and with direction of the prevailing winds of the year.Evaluation of the soils with the （N.L.）Nemerow composite index and the standard for PAHs management of agricultural soils in Canada showed 37% of the samples reached the level of heavy pollution;19% the level of moderate pollution;25% the level of light pollution;13% the warning limit;and only 6% remained in the grade of safety.

Key words: polycyclic aromatic hydrocarbons(PAHs), soil pollution, residue, assessment