The invention discloses Chinese olive blood-sugar reducing tea, which comprises the following raw materials in part by weight: 1,800 parts of Chinese olive, 250 parts of tea leaves, 30 parts of fragrant solomonseal rhizome, 25 parts of poria, 30 parts of yam, 25 parts of kudzuvine root, 30 parts of hawthorn, 50 parts of astragalus, 30 parts of pilose asiabell root, 30 parts of coastal glehnia root, 30 parts of dwarf lilyturf tuber, 15 parts of oriental waterplantain rhizome, and 30 parts of stevia rebaudiana. In the tea, the Chinese olive matched with the tea leaves is adopted as main raw materials, and the fragrant solomonseal rhizome, the poria, the yam, the kudzuvine root, the hawthorn, the astragalus, the pilose asiabell root, the coastal glehnia root, the dwarf lilyturf tuber, the oriental waterplantain rhizome, the stevia rebaudiana and other Chinese medicinal raw materials are auxiliary materials. The composed auxiliary materials have the effects of inviting body fluid and pacifying thirst, nourishing lung and clearing away the heart-fire, dispersing damp-heat, promoting edema, dispelling blood fat, replenishing qi to invigorate the spleen and the like, and can effectively assist the Chinese olive and the tea leaves to reduce blood sugar and blood fat. The tea is prepared by a pure Chinese medicinal formula, can effectively nourish yin and clear heat, detoxify, promote metabolism, invite body fluid and pacify thirst and reduce blood sugar and blood fat, can effectively prevent complication caused by hyperglycemia and hyperlipidemia, and is suitable for popularization and application.