Abstract: Abstract: In order to find out the concentration of phthalate acid esters (PAEs) and its pollution characteristics in topsoil and agricultural products in irrigation district at the Southeastern Suburb of Beijing, six kinds of PAEs in 31 topsoil samples and 38 crops samples in the irrigation district were detected by gas chromatography-mass spectrometry (GC-MS) in 2015. Results showed that the total concentration of six PAE compounds (∑PAEs) in topsoil ranged from 1.8 mg/kg to 12.2 mg/kg, with the average concentration of 5.1 mg/kg. There was no significant (P>0.05) difference for PAEs in soil among the different sewage irrigation history. Concentration of PAEs in topsoil in this study was relatively higher compared to those reported for other places in literature. The content of di-butyl phthalate (DnBP) and di-(2-ethylhexyl) phthalate (DEHP) in top soils contributed 60.4% and 35.9% to total PAEs, respectively. According to soil allowable concentration of phthalic acid esters compounds in USA, the concentration of dimethyl phthalate (DMP) and DnBP in all soil samples exceeded the control limits, indicating that the topsoil in this district was contaminated by PAEs, but the concentrations of all PAEs compounds were lower than the cleanup objective. The total concentration of PAEs in winter wheat (Triticum aestivum) grain, summer maize (Zea mays) grain, and edible part of vegetables and fruit were 2.34-3.66 mg/kg, 1.76-3.15 mg/kg, and 2.26-3.76 mg/kg, respectively. No significant (P>0.05) difference was observed for PAEs in cereals grain among different sewage irrigation history. Concentrations of PAEs in agricultural products in this study were in the middle level compared to the results of other studies. The content of DnBP and DEHP in winter wheat grain contributed 30.5% and 50.3% to the total PAEs, respectively. The content of DnBP and DEHP in summer maize grain contributed 50.2% and 45.1% to the total PAEs, respectively. The content of DnBP and DEHP in vegetable and fruit contributed 31.96%-46.36% and 47.16%-63.3% to the total PAEs, respectively. The concentrations of the total PAEs and each PAE compound in agricultural products were less than the suggested targets in Europe, implying low health risk. The concentrations of PAEs and DnBP in cereal grain showed a significantly (P<0.05) positive correlation with those in soils, with Pearson coefficients (r) of 0.74-0.87 and 0.91-0.92, respectively. The bioaccumulation factors of PAEs in wheat grain, maize grain, and vegetables and fruit were 0.74-0.82, 0.28-0.90, and 0.24-1.65, respectively. The carcinogenic risk of child and adult caused by PAEs were 1.34×10-5 and 3.87×10-5, respectively. The non-carcinogenic hazard index of PAHs for child and adult were 9.44×10-1 and 3.83×10-1, respectively. All of them were lower than the threshold values. Dietary intake is the major route of human exposure, which accounts for 99.81%-99.96% of the total carcinogenic risk and 99.85%-99.95% of the total non-carcinogenic hazard index, respectively. The carcinogenic risk and non-carcinogenic hazard index caused by DEHP in this study were relative higher, which accounted for 99.91%-99.94% of the total carcinogenic risk and 84.15%-84.37% of the total non-carcinogenic hazard index，respectively.