Based on elaborate analysis of pollution sources of the soil and a better understanding of the complexity of the soil pollution,an early warning system for ecoenvironment quality of farmland was established in light of the particularity of the research site (suburb).This system consists of three models,namely,evaluating model,forecasting model,and early warning model.The system monitors variation of soil pollution intensity as is influenced by the socio-environmental system and predicts trends of the variation of soil environment quality.Based on this understanding,the warning system was applied as test-run to the farmland in the suburbs of Zhengzhou city.The following findings were obtained.(1) The ecoenvironment quality of the farm-land in the suburbs of Zhengzhou has experienced a process of variation from rapid deterioration to relatively the worst and now to getting better,which implies that intensity of the stress of the socio-environment on soil environment has also followed a similar process,i.e.rising-the strongest-declining.(2) In general,the ecoenvironment quality of the farmland in the suburbs of Zhengzhou is not optimistic.It is,therefore,essential to exert overall control of all the factors that affect soil pollution,reduce external environment's stress on farmland soil environment,implement the work of early warning and prevention of soil pollution,and finally realize sustainable use of farmland soil.