The saturated hydraulic conductiv it ies of mainly paddy soil in Taihu lake region were studied. The results were as follows. (1) The saturated hydraulic conductivities in the soil were changeable from 7.20×10^-5 to 6. 33×10^-4 cm/ s and decreased with the increasing of soil depth.(2) The saturated hydraulic conductiv it ies of undistur bed soil and distur bed soil were quite different and affected by soil texture, organic matter content, bulk density, porosity and structural index. The saturated hydraulic conductivity of undisturbed soil can represent the really case in the field and is significant to study soil moisture balance and soil water conservation. But the saturated hydraulic conductivity of disturbed soil can only be used for a reference information in agricultural engineering.