Abstract: 24 surface samples and 2 profile samples at a typical oil sludge storage site and in its peripheral soil were collected and analyzed. The UE-GC/FID method was used to quantitatively analyze the 16 kinds of PAHs which were controlled priority pollutants by the USEPA. The results showed that the study area was polluted severely by PAHs. The detection rate of the 16 kinds of PAHs at the contaminatedsites was 100%, in their peripheral soil it ranged from 58.3% to 100%, while the detection rate of dibenzo ［a,h］ anthracene and indeno ［1,2,3-cd］ pyrene was relatively low. The average quantity of PAHs reached 7 770.7 and 2 038.8 ng/g respectively. The main pollutants were naphthalene, acenaphthene, acenaphthylene, fluorene, phenanthrene, anthracene, fluoranthene, chrysene, pyrene, benzo［a］anthracene and benzo［a］pyrene. The pollution sources were mixed sources of combustion and oil sources according to mono-component ratio and relationship between precursor PAHs and the contaminants. The peak values of PAHs in the profiles appeared in the range of 40～60 and 20～40 cm. The ability of different PAHs components to transport downward changed in the profile, which was characterized as 2～3 ring PAHs>4 ring PAHs>5～6 ring PAHs.