Abstract：Soil microorganism plays a key role in the materail cycle an energy flow in soil ecological system. Sample of soils was selected, in order to know that the trend of soil microorganism commuity and quantity change, which were gathered from Haizhou, kangping county of Liaoning province. Compared difference in various vegetations and their growth state of the amount of soil microoganism. Exploration in the sand soil fertility management of the quality of response and the evolution of the law, in order to seek the best in the region provide the basis for fixing vegetation. The results show, in the main changes the trend of the soil microorganism quantity, that: in fixed sand dune is highest, and that of the moving sand dune is lowest, the semi-fixed sand dune between the fixed sand dune and the moving sand dune. Various types of microorganisms, in the distribution of different types of sand, has the proportion of different. Arrangement of the three the total number of microbial was different: the number of bacteria was more, followed by actinomycetes and fungi was least. In different enviroment and in different zones of the semi-fixed dunes were not the sane as the ratio between the composition of microbial taxa and various groups. The number of vegetation′s microorganisms were Joe than shrubs and herbaceous. The different of vegetation growth zones in the same proportion of microbial composition was different.