The invention discloses liver-nourishing tea and a preparation method thereof. The liver-nourishing tea is mainly prepared from the following plant raw materials in percentage by weight: rhinacanthus nasutus, wedelia chinensis, mussaenda, abrus precatorius, gynostemma pentaphyllum, abrus cantoniensis hance, momordicae flos, chrysanthemum, jasmine, globe amaranth flower, radix rehmanniae, rose, roselle and asparagus. The method for preparing the liver-nourishing tea comprises the following steps of: frying and fixing the rhinacanthus nasutus, the abrus precatorius and the gynostemma pentaphyllum, and rolling, drying and shaking to screen the three materials; spraying concentrated solution prepared from the wedelia chinensis, mussaenda, radix rehmanniae, momordicae flos, abrus cantoniensis hance, asparagus and roselle, and drying and cooling the materials; and mixing the materials with the chrysanthemum, jasmine, globe amaranth flower, and rose to prepare the finished product of the liver-nourishing tea. The liver-nourishing tea has the effects of soothing the liver and expelling toxin, purifying blood vessels, refreshing the brain and regaining consciousness, protecting the stomachand regulating intestines, moisturizing the lung and eliminating phlegm, prolonging life and nourishing the skin, enhancing the detoxication function of the liver and improving the function of the immune system, and the like, and has the advantages of aromatic and sweet mouthfeel and capacity of fulfilling the health-protection aim after frequent drinking.