The invention discloses a rose chrysanthemum tea and a preparation method thereof. The rose chrysanthemum tea is prepared from the following raw materials: 60-80 of Fagopyrum tataricum, 18-22 of rose, 12-15 of chrysanthemum, 6-8 of walnut style, 3-5 of Aquilaria sinensis leaf, 4-6 of cinnamon, 3-4 of flower of Japanese banana, 4-6 of lophatherum gracile, 6-8 of licorice, 8-10 of balsam pear, 4-5 of cucumber seed powder, and 20-30 of mulberry juice. According to the rose chrysanthemum tea prepared by the method provided by the invention, color protection and oxidation prevention are employed, the functional components are maximumly preserved, also baking and cold soaking are employed so as to precipitate beneficial ingredients more easily, and compounding with other traditional Chinese medicines are realized, the health care value is enhanced, the taste and flavor are improved and reconciled, Fagopyrum tataricum is endowed with flavor, and organic combination with tea is achieved. The rose chrysanthemum tea is convenient to store and eat, can be drinkable after brewing, has ruddy and transparent tea color, is sweet and mellow, has the efficacy of refreshing people and improving intelligence, nourishing yin and clearing heat, helping produce saliva and slake thirst, invigorating the circulation of blood and maintaining beauty, losing weight and reducing fat, etc., and is beneficial to body health.