The size features of soil microorganism were studied in this paper. For bacteria the numbers different habitats: Calamagrosts epigeios community >weeds community >the sparse woods of Ulmus pumila >Aneurolepidium chinense community > Puccinellia tenuiflora community >Suaeda glauca community. The order for fungi was: the sparse woods of Ulmus pumila >Aneurolepidium chinense community >weeds community > Calamagrosts epigeios community >Puccinellia tenui flora community > Suaeda glau...