The paper reviews the research on the microbe in saline-alkali soil,mainly including the microbial quantity of saline-alkali soil,soil enzyme activity and distribution,effect of salt stress and vegetation on soil microbe and soil enzyme activity,as well as the microbial diversity and biomass of saline-alkali soil,then it discusses the separation and resourceful utilization of microbe in saline-alkali resistant soil,and at last forecasts the further study of the microbe in saline-alkali soil.