Qinwangchuan，being brought under cultivation in a large scale，is a area of higher erosion and margin of dryland farming in the process of improving dryland into irrigation farms with clearing away the grit cover，soil material to be apt to be eroded by wind makes up about 9000 of reclaimed surface soils. The fitful blast and combination of wind and temperature come into a stronger erosive force. Soil mass loss is 12. 24t/hm2 per month from winter to the next ear1y summer，which results from the interaction of erosion and sediment. The change of wind erosion amount has no obviously relationship with wind speed，however the irrational human activities in irrigation and cultivation are the main factors of wind erosion.