The invention discloses a preparation method of a red jujube and Chinese yam milk beverage. Red jujubes, Chinese yam and milk are used as main raw materials, components of white granulated sugar, citric acid, a thickening agent and the like are added, organoleptic investigation is used as an index, and the red jujube and Chinese yam milk beverage is prepared. The method disclosed by the inventionis adopted, so that the red jujube and Chinese yam milk beverage products can be directly prepared and are light in milk tea color and glutinous liquid in texture. The red jujube and Chinese yam milkbeverage has soft and smooth feeling of the Chinese yams, is uniform in state, fresh, fragrant and sweet in taste, moderate in sour and sweet degrees, and delicious, has specific and mixed flavor of the red jujubes, the Chinese yams and the milk, and is uniform and consistent in color, and free from suspended impurities. The red jujube and Chinese yam milk beverage not only is nutritive and can nourish bodies, but also has the functions of supplementing qi and blood, reducing blood pressure, nourishing kidney qi, invigorating the spleen, protecting the stomach, strengthening constitutions, delaying senescence and the like.