Soil pollution mixed by persistent organic pollutants(POPs)and heavy metals is widely distributed in farmland. However,little attention has been paid to their interaction in soil.Surface soil samples were collected from a typical copper contaminated farmland in Fuyang of Zhejiang province and analyzed for organochlorine pesticides(OCPs),such as HCB,HCHs and DDTs.The results showed that soil total content of DDT increased with the degree of copper contamination in soil probably as a result of an inhabitat ion from DDT metabolized to DDE or to DDD by the high copper content.Correlation analysis indicated a closer relationship between the content of OCPs and the content of organic matter in the copper contaminated soil,implying that copper pollution might have promoted combination of DDTs and HCHs with organic matter in the soil.This result also likely accounted for the higher content of DDTs in paddy soil than that in upland soil since higher content of copper were generally found in paddy field in this investigation area.