Taking Jiefangzha Irrigation field as research area, 49 surface soil samples were collected in September of 2015 and the residues and distribution characteristics of seven kinds of PCBs were analyzed. The results showed that PCBs were contaminated in 98% of soil samples. The residues of Σ₇PCBs ranged from ND to 65.04 ng/g, and the mean residues were 10.28 ng/g. Mainly based on low-chlorinated PCBs contents, the residues of PCB47 play a leading role, and the detection rate was as high as 96%. However, high-chlorinated PCBs residues were low, the detection rate was also lower (43%). There were differences in the residues of 7 PCBs in soils under different crops, soil quality and irrigation conditions. The spatial distribution of PCBs discussed by the Kriging method showed that from the southwest to the northeast, there was an uneven distribution from low to high, the concentration gradually decreased toward one side, and the southwest was slightly lower than the northeast.