h in recent years has aroused peoples great interest and concern. A few years ago, there have been reports that a Shanghai tea to the public because of esophageal cancer reduced year by year, this tea can prevent the occurrence of cancer in the world this fact has aroused great repercussion. Now tea can prevent cancer cancer has been recognized by the world, and in tea anti-cancer effects in cancer prevention is the best Tieguanyin.

　　As early as 1983, Japan Okayama University Okuda extension of the male professor had several dozens of plants polyphenolic compounds for screening anticancer effect change, results show that: catechins (EGCG) has a strong anti-cancer Activity. Other scientists confirmed Tieguanyin-variation of the study, Tieguanyin tea polyphenols that this role is the main active ingredient in the carcinogenic chemicals in the study, and affirm