A study on movement and redistribution of water and salt in soil in relation to emitter discharge rate was conducted through indoor simulation tests in soil columns.Results show that depending on emitter discharge rate,the wetted front at the meeting interface of waters from two emitters appeared to be either elliptical or circular.High emitter discharge rates accelerated horizontal movement of the water,resulting in greater horizontal dispersion rate than vertical infiltration rate.With decreased emitter discharge rate,the distance of horizontal infiltration approached to that of vertical infiltration-Wetted soil volume was related to total quantity of the irrigation water rather than emitter discharge rate.Based on the rules of wetted front movement,a proper emitter discharge rate was suggested for field practice.At the end of drip irrigation,water and salt had experienced important redistribution processes.The movement of water and salt to deeper soil layers promoted desalination of the upper soil layer.The effect was markedly better with low emitter discharge rates than high emitter discharge rates.The movement of salt was the most active onthe first three days of redistribution.A proper water volume per emitter that satisfies both the demand of a crop for growth and the need of the soil for salt leaching was worked out through the experiment,whichis sure of certain practical significance.