Objecti: Elaeagnus Angustifolia Polysaccharide (EAP) is a kind whichwithdraws from the narrow-leaved oleaster for beta -1,3 key Connection of water-soluble acidic polysaccharide, has the many kinds of biologiesactiveness. Day by day thorough along with the recent years plantpolysaccharide research, discovers some sugars compound and manybiological phenomena and the disease close correlation. Thepolysaccharide most early took the medicine was in 1943, after the20th century 60's the polysaccharid...