Some factors influencing wind erosion are quantitatively studied by the wind tunnel experiment. The results show that the rate of wind erosion positively interrelates with the wind speed. The rate of wind erosion increases with the increasing of wind velocity. The wind velocity of 18 m/s is significance point to aggravate the wind erosion. The rate of wind erosion decreases with the increasing of soil moisture, 6% of soil moisture content is a turning point. The spatial distributing trend of eroded sand takes on a single-peak curve. The maximum quantity of collecting sand is within 2~4 cm high above ground, 80 percents of the eroded sand distributes within 10 cm high. Unreasonable tillage and over-reclamation are the important factors to aggravate the wind erosion.The rate of wind erosion of tilled grassland is 66~306 times than the untilled.The rate of wind erosion for tilled farmland is 25~108 times than the untilled.