Acetyl trans-resveratrol is a natural active ingredient, it can free state (cis, trans) and glycosidic bond (cis, trans) 2 forms in plants (such as Chinese medicine Polygonum) in the distribution and biosynthesis, and both antioxidant efficiency, which the anti-isomer of biological activity in cis, is an important grape in plant resistance to toxin. Acetyl trans-resveratrol is the wine (especially red wine), the most important functional components.