Take the long-term grazing point on Stipa breviflora desert steppe in Inner Mongolia plateau as the research object, randomized blocks were adopted with 0.93 (LG), 1.82 (MG), 2.71 (HG), 0 (CK) sheep/hm2 and the wind tunnel test of undisturbed soil samples were carried out in order to study the quantitative relationship between grazing intensity and wind erosion rate, and to estimate the total amount of wind erosion under different grazing intensities in Desert Steppe. The results indicated that the community structure characteristics of different grazing intensity treatments were significantly different (p < 0.05), but the soil crust and change of soil particle size composition in 0~5cm depth were not significant (p > 0.05). The equation of wind velocity and wind erosion rate in different grazing intensity treatment areas has a better fit index, however, the equation fitting coefficients R2 of HG and MG are larger than that of LG and CK, and the parameter B for characterizing wind speed sensitivity increased from 0.15 in CK to 0.21 in HG region with the increase of grazing intensity, it showed that the wind erosion rate was more sensitive to the increase of wind speed under grazing condition. Wind erosion rate had a very significant positive correlation with wind speed and grazing intensity（r=0.601 and r=0.563, p<0.01), and highly significant negative correlation with coverage and height（r=-0.544 and r=-0.535, p<0.05). Based on the two years’ data of small meteorological station and the equation of soil wind erosion, the annual wind erosion amount was between 110-680 t/km2.year on Stipa breviflora desert steppe, the annual average amount of wind erosion per unit area increased gradually with the increase of grazing intensity, the average annual wind erosion amount was 115.24 t/km2.year in CK treatment area, it was about 17% of HG area wind erosion amount that was 648.95 t/km2.year, MG area and LG area were 60% and 23% of HG area, respectively.