It was seed treatment with Drug of Drought Resistance and Yield Increment (DODRAYI) that activities of superoxide dismutase(SOD),catalase(CAT),and peroxidase(POD)could be raised,and the level of malondial——dehyde(MDA) content could be reduced ,and the structure of plasmamembrane was relative stable ,and leaf relatie water content could be raised and inhibition of seedling growth were decreased in wheat seedling under drought stress.Therefore,the drought resistance were improved in wheat seedling.In field te...