Pure natural tea polyphenol instant beverage

The invention provides pure natural tea polyphenol instant beverage, which comprises the following components on the basis of weight percentage proportion of raw materials: 10-80% of commercial tea polyphenol, 5-35% of 20% theanine and a mixture thereof, 5-30% of grosvener siraitia extract and 0-35% of commercial stachyose. A preparation method of the pure natural tea polyphenol instant beverage comprises the steps of: respectively carrying out digesting, filtering, chromatographing, juice-forming concentrating on the four raw materials according to the proportion of the upper percentage limit and the lower percentage limit of the components, carrying out reduced pressure distillation and concentration, centrifugal spraying and drying according to the proportion to obtain a finished product. The finished product is prepared by proportioning the components on the basis of weight percentage proportion of the raw materials according to formula proportion, the beverage is sanitary, convenient, instant and dreg-fr