By the method of whole digging sampling,the ecological characteristics of roots of Artemisa arenaria were studied in different types sands land in arid desert area.The results indicated that: Root total biomass of Artemisa arenaria was changed in different sand land types.The root biomass order is moving sands land(122.43 g)>fencing sands land(106.35 g)>semi-fixed sands land(90.15 g).In the range of 0~40 cm soil layer,in different type sands land 75% roots biomass of Artemisa arenaria were existed.The proportion of taproot biomass of Artemisa arenaria with 0~20 cm to total root biomass is that fencing sands land(67.11%),moving sands land(53.52%),semi-fixed sands land(62.48%).Lateral roots biomass of Artemisa arenaria of fencing sands land and semi-fixed sands land is in 0~20 cm,one of moving sands land is in 20~40 cm.The relativity of soil water content in different types and roots biomass of Artemisa arenaria is remarkable.