Abstract: 95 oilseed samples of 18 species were collected from different cultivating areas.The PAHs contents of the samples were detected and analyzed by gas chromatography-mass spectrometry (GC-MS) and the security risk of PAHs in oilseeds were also studied.The results indicated that PAHs were observed in all of the 95 samples.However,some oilseed samples not simultaneously found all of the 16 individual PAHs.Dibenzoa,hanthrancene (DhA) was not found in mandulapalka,plukenetia volubilis linneo,penoy seed and almond,while benzog,h,iperylene (BgP) was not detected in rice bran,sesame and walnut samples.Indeno1,2,3-cdpyrene (IcP) was not detected in some rice bran,penoy seed,walnut and almond.LPAHs were accounted for 87.07%-99.54% of the total PAHs,and the minimum and maximum concentrations were 80.27 and 409.02 μg/kg,respectively.Naphthalene (NaP) and phenathrene (Phe) were prominent in all of the oilseeds samples at concentration of 24.54-114.95 μg/kg and 20.07-114.95 μg/kg,respectively.Meanwhile,the concentrations of BaP in 95 oilseed samples ranged from 0.10 to 14.06 μg/kg,and the average concentration of BaP was 2.19 μg/kg.The concentrations of PAH4 ranged from 1.09 to 74.61 μg/kg,with a mean level of 13.06 μg/kg.The contents of PAH16 ranged from 81.81 to 466.77 μg/kg,and the average content was 213.18 μg/kg.The 18 types of oilseeds were divided into herbaceous plant oilseeds (HPOS) and woody plant oilseeds (WPOS) according to the type of oil crop.HPOS included 50 oilseed samples of 10 species,and WPOS included 45 oilseed samples of 8 species.The concentrations of BaP,LPAHs,HPAHs and PAH16 in HPOS were 0.15-14.06,86.33-406.43,1.38-60.34 and 91.14-466.77 μg/kg,respectively,and the corresponding average contents of them were 2.85,209.83,13.55 and 223.38 μg/kg,respectively.The concentrations of BaP,LPAHs,HPAHs and PAH16 in WPOS were 0.10-6.38,80.27-409.2,1.24-51.01 and 81.81-460.03 μg/kg,respectively,with the corresponding average contents of 1.45,194.02,7.83 and 201.85 μg/kg,respectively.There was no significant difference in PAH16 content between herbaceous oilseeds and woody oilseeds.Moreover,the health risks assessment of PAHs for 34 samples of five edible oilseed (peanut,walnut,sunflower seed,sesame and soybean) showed that the range of incremental lifetime cancer risk (ILCR) was from 4.0×10^-7to 4.78×10^-6.The results indicated that the carcinogenic risk of PAHs of 95 edible oilseed samples was in an acceptable range.The present study will provide the support for the security risk analysis of PAHs in edible vegetable oilseeds.