Abstract: In this paper, the effects of soil amendments on soil hydrodynamic parameters were studied. The results showed that, with soil amendments application, saturated hydraulic conductivity increased; unsaturated diffusivity was also affected. Compared with control, at the same distance far from water supply in horizontal column, water content was lower than that of control. With high water absorbing and holding capacities of soil amendments, soil treated with soil amendments can preserve more water than that without treatment. Soil amendments can increase content of effective soil water. Because applying part was different, there was a big difference in water content amon treatments. The result implied that way and depth of soil amendment application were important factors which affected soil water condition.