The new leaf of Camellia sinensis O. Ktze. TP 1098%; EGCG 4070. UV HPLC. Polyphenol have obvious effect on the following aspects: Reduce blood pressure, anti-hem agglutination, lose weight, reduce blood glucose, prevent and cure diabetes, kill germs; protect digestive system, respiratory system; prevent and cure flu, hepatitis, adipose hepatica, periodontitis, detoxify and strengthen the immunity.