The invention discloses Qianliang tea having the function of protecting liver and a preparation method of the Qianliang tea. The Qiangliang tea is prepared from the following raw materials in parts byweight of 80-100 parts of tea leaves, 80-100 parts of dark tea stems, 8-10 parts of stringy stonecrop herbs, 10-12 parts of honeysuckle flowers, 12-14 parts of folium isatidis, 6-10 parts of common selfheal fruit-spike and 3-5 parts of radix astragali. Tea polysaccharide substances in the dark tea stems are sufficiently used, and are mixed with tea leaves and the like in proportion, and fermentation is performed, so that the Qianliang tea having the function of protecting liver is prepared. In addition, the stringy stonecrop herbs, the common selfheal fruit-spike, the honeysuckle flowers, thefolium isatidis and the radix astragali are added, and the stringy stonecrop herbs, the common selfheal fruit-spike, the honeysuckle flowers, the folium isatidis, the radix astragali, the tea leavesand the tea stems are fermented through a pile fermentation process, so that active substances of the raw materials are sufficiently mixed, health-care efficacy of nourishing the liver and protectingthe liver are improved, the synergistic reaction is obvious, unique flavor of dark tea is reserved, and the Qianliang tea is different from other medicines for nourishing the liver and protecting theliver. Besides, the tea stems are broad in source in markets, the comprehensive utilization range of tea leaf resources can be expanded, and the development prospects are broad.