The wetlands in Lake Liangzi in the middle reaches of Yangtse River were investigaged in autumn, after late rice harvest in 2003.Five typical paddy soil were identified, i.e.submergic, hgdroario, bleached, gleyed and swamp paddy soils.Soil profiles as well as samples from different horizons were collected for measuring organic matter, TN,TP, TK and available N, P,K etc, It was found that the content of organic matter, TN, TP, TK were 24.203-56.815 g/kg,1.385-2.911 g/kg,0.406-0.523 g/kg and 14.68-26,77 g/kg,respectively.The organic matter,TN,TP,TK were increased in paddy soils with the drop of topographical location and the ascending of ground-water level in the plow layer.The organic matter, TN,TP and TK were decreased fonn plow layer to subsoil in five paddy soil profile except that TK was increased from plow layer to subsoil in submergic paddy soil profile.In addition, available N of plow layer in swamp paddy soil was lower than gleyed paddy soil, but higher than other three paddy soils.Available N of plow layer has similar variation with TN in other four paddy soils whereas available P of plow layer was lowest in swamp paddy soil.Correlation analysis revealed that the organic matter, TN,TP,TK have significant correlation in plow layer with correlation coefficient of 0.957,0.953 and 0.825 respectively.At swamp paddy soil profile, the correlations between organic matter with TK, and between TN wth TK were also significant, with correlation coefficients of 0.772 and 0.674,respectively.However, at sumergic paddy soil profile the TP with TK were negatively correlated(R=-0.675).