Wild black tea contains vitamins, caffeine, amino acids, minerals, polysaccharides, tea polyphenols and other nutrients and efficacy components. Studies have shown that black tea has the effect of assisting in lowering blood sugar, blood pressure and blood lipids. Tea pigment in black tea has antioxidant, anti-tumor, anti-inflammatory and antibacterial, anti-mutagenic, anti-virus, deodorant and other effects. It can clear away heat and relieve symptoms; it is used for acute and chronic enteritis, dysentery; acute hepatitis, dyspepsia, aging and other conditions.