The shrub of Artemisia sphaerocephala are widely distributed in the fixed and semi fixed sands, covered sand beach,and are perfect sand-fixation plant.Study of the effect on different distribution modes of Artemisia sphaerocephala to soil wind erosion is of great significance to ecological construction and preven- tion against soil wind erosion in the fixed and semi fixed sands.The paper takes three distribution ways of Artemisia sphaerocephala as research subjects,and coverage degree of each way is between 20% and 25%, through the research on the aspects of wind field distribution and wind energy change,analysis the mecha- nism of planting disposition to prevent soil wind erosion based on aerodynamics principle.The conclusion as follows:The wind velocity profile of Artemisia sphaerocephala with uniformity model,stochastic model and banding collocate all follow one-variable linear regression;In three ways,the surface roughness of the brush with banding collocate is stablest,and the average windbreak effect is best.In short,it indicates that the effect of banding collocates for controlling wind erosion is most suitable.