Kudingcha belongs to Kudingcha family, also known as pineapple tree, Dayecha and Kudingcha. The source is the leaves of Ilex kudingcha. Ilex plants. Born on hillsides, bamboo forests and bushes. Distributed in provinces and Fujian in the lower reaches of the Yangtze River. Function is mainly used to dispel wind and clear heat, clear the head and remove polydipsia. Used for headache, toothache, red eyes and fever, polydipsia and dysentery. Digestion promoting, expectorant, thirst quenching, constipation relieving, greasy removing, liver wind dispersing, tinnitus and deafness treating, blood circulation promoting, and cooling palace. According to Compendium of Materia Medica, Kuding tea has pharmacological effects such as expelling wind and clearing heat, clearing the head, promoting fluid production to quench thirst, promoting digestion and refreshing, diminishing inflammation and detoxicating, and lowering blood pressure and blood lipid. According to the research of tea research institute of Chinese Academy of Agricultural Sciences, crop research institute of Chinese Academy of Agricultural Sciences, forest environmental protection research institute of Chinese Academy of Forestry, geological testing center of Ministry of Metallurgical Industry, tea quality supervision, inspection and testing center of Ministry of Agriculture and other scientific research units, vitamin C, vitamin D, vitamin E and various amino acids were separated from kudingcha. B- carrots, polyphenols, triterpenoid glycosides and other substances, as well as calcium (Ca), potassium (K), sodium (Na), manganese (Mn), molybdenum (Mo), magnesium (Mg), iron (Fe), zinc (Zn), selenium (se), germanium (Ge) and chromium (Cr). According to Guangdong Science and Technology News1May, 1993 15, "Kuding tea has the functions of lowering blood pressure, blood fat and cholesterol, clearing away heat and toxic materials, diminishing inflammation and sterilization, invigorating stomach and promoting digestion, refreshing the brain, improving eyesight and improving thinking, and is a good medicine for cooling liver, expelling wind, relieving pain and diminishing inflammation. Has obvious curative effect on treating hypertension, obesity, stomatitis and pharyngolaryngitis. It has good curative effect on acute gastritis, common cold, abdominal pain, shortness of breath, malaria, constipation, etc. Can inhibit nasopharyngeal carcinoma and esophageal cancer; Washing with boiling water can treat a variety of skin diseases and burns; If tea is used instead, it tastes sweet and refreshing, produces fluid to quench thirst, tastes bitter first and then sweet, and has a lasting aftertaste, so it is called' green gold',' longevity tea' and' beauty tea'. The clinical application of modern science shows that Kudingcha has the functions of relieving summer-heat, detoxicating, diminishing inflammation and sterilization, resolving phlegm and relieving cough, invigorating stomach and promoting digestion, refreshing the brain, reducing weight, resisting cancer, resisting radiation, lowering blood pressure, lowering blood fat and cholesterol. Known as health tea, longevity tea and beauty tea by consumers at home and abroad, it is a widely used natural multifunctional plant beverage.