According to analysis six tillage methods how to effect Dingxi semi-arid area spring wheat soil water annual change and vertical change and water use efficiency.Result shown no-tillage and traditional tillage treatments had little water storage but higher water use efficiency.No-tillage with out mulch and no-tillage mulch treatments had more water storage but lower water use efficiency.From the effects of different tillage methods to soil water storage,TW_6>TW_3>TW_1>TW_5>TW_2>TW_4,water use efficiency TW_2>TW_4>TW_1>TW_5>TW_3>TW_6.