The invention belongs to the technical field of food production, and particularly relates to a winter health-preservation tea bag and a preparation method thereof. The winter health-preservation tea bag is prepared from 2-5 parts of red jujubes, 1-3 parts of Chinese wolfberry fruits, 0.5-3 parts of ginseng, 0.5-2 parts of rhizoma polygonati, 1-4 parts of black tea and 0.1-0.5 part of oligopeptide powder. A formula of the winter health-preservation tea bag is matched according to a four-season health-preservation principle and a winter health-preservation principle of traditional Chinese medicines, high-quality raw materials are preferably selected, the ginseng and the rhizoma polygonati are used for nourishing qi and the spleen, the red jujubes are used for nourishing blood, the Chinese wolfberry fruits are used for enriching yin and nourishing the kidney, the black tea is used for warming and tonifying the stomach, and besides, the oligopeptide powder is added, so that the immunity of organisms is enhanced, when people drinks the winter health-preservation tea bag for a long time, the effects of benefitting qi, eliminating fatigue, promoting production of body fluid, soothing nerves, and nourishing the kidney can be achieved, and the health-preservation health-care purposes are achieved.