The objective of this study was to predict the potential influence of sulfur-coating material(SCM) left in soil by using sulfur-coated fertilizer(SCF) on agriculture ecosystem.In order to find the effects of sulfur from SCU on soil leaching characteristics,a leaching trial which included 6 treatments was conducted.The results of the experiment indicated that the pH value,EC value of brown soil leachate and its K~ ,Na~ ,Ca~(2 ),Mg~(2 ),SO~(2-)_4 contents have been changed markedly by applied sulfur powder which equal to sulfur-coating of SCF.And the summations of K~ ,Na~ ,Ca~(2 ),Mg~(2 ),SO~(2-)_4 in leachate including all 5 times increased along with adding more sulfur powder.Except for SO~(2-)_4,K~ ,the other indexes of soil leachate have been influenced prominently by applied SCU.Otherwise,the sulfur-coating of SCU were not same as sulfur powder affecting soil leaching characteristics in short time because they have different physical figures.But the effects of sulfur powder on soil leaching characteristics may cover for sulfur-coating influences when sulfur-coating accumulated and transformed.