The distribution characteristics and dynamic changes of salt ions in the rhizos-phere of barley plants were investigated in rhizobag experiment, with salt tolerant variety Taiying No.5 (T) and salt sensitive variety CT16(S). It was found that pH value in nonrhizosphere of T barley was higher than that of S barley, while in rhizosphere, the contrary result was observed. Except for the K⁺ depletion, Na⁺, Ca²⁺, Mg²⁺, SO₄^2-, Cl^- and HCO₃^- ions were accumulated in the rhizosphere of T barley compared to those of non-rhizosphere. For S barley, K⁺ and Na⁺ ions were depleted whereas other ions were accumulated to certain degree. But for HCO₃^- ion, the degree of depletion or accumulation of other ions was lower for S barley as compared with T barley. The original content of soil salt ions and growth stage of barley plant would affect the distribution of ions at barley root-soil interface and relate to the salt ion absorption of barley plant.