The invention relates to a formula of Chinese herbal medicine herb tea, and particularly relates to health-preserving dendrobe herb teabeverage, and the invention also relates to a preparation method and an application of the health-preserving dendrobe herb tea. The health-preserving dendrobe herb tea beverage disclosed by the invention is prepared by elaborately blending eight Chinese herbal medicines, namely dendrobe, leaf of paniculate microcos, liquorice, chrysanthemum, honeysuckle, selfheal, lotus seed, and red dates. Compared with the traditional herb tea with a single function, the health-preserving dendrobe herb tea disclosed by the invention has the effects of dispelling wind and reducing pathogenic fire, clearing away the lung heat and moisturizing, enhancing physical fitness, tonifying deficiency and spleen, protecting liver and benefiting for gallbladder, strengthening tendons and reducing fat and blood sugar, and the like, can be applied to the fields such as the aspects of reducing blood sugar, restraining a tumor, delaying aging, and treating beauty and keeping the facial appearance, and is the herb tea beverage with the effect of preserving health in fact.