The experiment of evaporation and movement of soil water were carried out in the tpolyniethylmethacrylate cylinders of 5 em in diameter and 120 cm high.The soil used in the experiment was a heavy loam;and CaCl₃,was used as the tracer.Four treatments were laid out on the basis different soil moisture contents,they were (a) the maximum hygroscopicity,(b) wilting percentage,(c) the moisture content of the capillary bond disruption,and (d) the minimum water-holding capacity.The experimental data showed that,under evaporation condition,the lower limit of water in the liquid form in soil is near the wilting percentage.When soil moisture content is lower than the wilting percentage,the movement of the soil water in liquid form is usually extremely weak.