By observe the effect of the various stubble heights on the wind speed and the effect of wind erosion on the soil under three different tillage forms-stubble mulch(the main type of conservation tillage), rotary plowing and traditional plowing. The results were as follows: The wind speed is less affected by the various stubble heights but more on whether the practice of stubble is applied or not. The appropriate stubble height is around 20 cm, which is high enough to hold down the wind speed, deduce the amount of rising sand and resist the wind erosion on soil. The three tillage forms mentioned above showed a significant difference of their effects on restraining the amount of raising sand in farmland. Below 60cm, the form of conservation tillage (stubble mulch) reduced the amount of raising sand by 34.9% to traditional plowing and by 61.5% to rotary plowing. So stubble mulch is an effective tillage form in controlling sand storm.