Many sorts of ester-catechin such as Tea polyphenol and EGCG mainly were applied to medicine, life sciences, health care, daily chemical and other fields, as follows:(1)In medicine, applied to enhance the human immunity and the treatments  of leukemia, skin cancer, stomach cancer, esophageal cancer and other tumor diseases;(2)In the food industry ,used as antioxidants, preservatives, removing foul agents;(3)In chemical products, used as special durability agents and skin (hair) agents;(4)In the tobacco industry, used as cigarette filters antidotes;(5)In agriculture, used as growth hormone and unique pesticides.

    Due to the high cost of EGCG, EGCG is currently mainly used in medicine, and Tea polyphenol be rich in EGCG is mainly used in health products and daily chemical industry.