Abstract: The superoxide free radical (o)scavenging capacity of Artemisia anomala S.Moore was studied by nitro blue telrazolium (NBT) photo-ueduction.The results showed that the extract from Artemisia anomala S.Moore had strong scavenging effect on superoxide free radical.The seavenging effect was related to the content of the flavonoids.When the concentration of the flavonoids in extract is high enough it had strong scavenging rate as 88.41 % .Using the models of VCCu2+-H2O2 for hydroxyl radical (OH· ).the scavenging capacity of the extract of Artemisia anomala S.Moore on OH· was investigated.The maximum scavenging capacity on hydroxyl radical was 84.02%.

Key words: Artemisia anomala.S.Moore Extract Scavenge Superoxide free radical Hydroxyl free radical