The invention discloses coffee fruit tea powder and a preparation method thereof. The method comprises the steps of preparation of micro-fermented coffee pericarp tea, preparation of functional ingredient powder, mixing, packaging and the like; through the steps of enrichment and powder-wrapping drying, beneficial ingredients in the coffee pericarp tea are effectively increased, and the phenomenonof wet-fermentation acidification caused by repeated water induction is prevented. According to the coffee fruit tea powder and the preparation method thereof, by combining pre-fermentation in the enrichment process with subsequent micro-fermentation, fermentation is conducted completely and thoroughly to effectively improve the flavor and nutritional value of the coffee pericarp tea. The functional ingredient powder extracted from various raw materials with homology of medicine and food such as cortex cinnamomi and radix puerariae is added into the coffee fruit tea powder and matched with the coffee pericarp tea, so that the coffee fruit tea powder has obvious health care functions of reducing blood sugar and blood pressure, inducing sweat and dispelling exogenous evils and coldness; beneficial substances of the coffee fruit tea powder are dissolved out more quickly and efficiently, waste generated after coffee bean processing is fully utilized, the economic value of coffee pericarpis exerted to the greatest degree, and the coffee fruit tea powder has broad application prospects.