The invention discloses a health-preserving tea and a preparation method thereof. The health-preserving tea comprises the following raw materials: tea leaves, chrysanthemum flowers, honeysuckle flowers, lily bulbs, lemon fruits, raspberry fruits, broom blossoms, red dates, lotus seeds, Chinese yams, radix codonopsis, radix astragali, ginseng, dodder seeds, herba dendrobii, Chinese cinnamon, cordyceps militaris, vitamin C, and vitamin E. The raw materials of the health-preserving tea are rationally proportioned, and supplementary to each other; and traditional Chinese medicine theories are adopted as guidance in consideration of property and meridian distribution performance of the drugs according to four natures and five flavors of the drugs. Moreover, the traditional Chinese medicine materials and the vitamins are added so that the prepared tea is a multi-functional health-preserving tea capable of improving human body microcirculation in combination of promotion of body metabolism, and thus, the effects of keeping youth, beautifying, clearing away heat, detoxifying, relieving visual fatigue, nourishing the spleen, protecting the liver, moistening the lung, nourishing the heart, prolonging life span and so on are achieved.