China has the history ofdiseases with there are many records about curing diabetes, dysentery, cold-catch with old tea among the people in ancient China. Modern western medicine thinks that polyphenols, pigments, polysaccharides, saponins, amino acids, alkaloids, and inorganic elements in tea have health care function to human body. Tea is a kind of special beverage that can strengthen the immunity of Hunan body. Tea is a kind of special beverage that can strengthen the immunity of hunan body, resist oxidization and aging, prevent cancer, reduce blood fat and cholesterol, adjust metabolism, so tea has been generally acknowledged as healthy beverage in the 21st century in tea and medical science circles all over the world.

The main functional composition of Fu Tea Brick (One of Dark Teas) is tea polysaccharides compound. This kind of compound is regarded in medical science circle that it can adjust sugar metabolism (prevent and cure diabetes), reduce blood fat and high blood pressure, resist thrombasis and improve immunity of human body. Clinical experiments have proved that