The present invention provides a preparation method of a health-care blueberry beverage, and includes the following raw materials: blueberries, herba dendrobii, ginger, schisandra chinensis, sugar stevia leaves, Chinese wolfberries, guavas, carrots, sapodilla, grapes, actinidia chinensis, haws, bitter apricot kernels, corn, oats, soybeans and green tea. The beverage contains a variety of effective ingredients and nutritional ingredients including polysaccharides, flavonoids, flavonoids, saponins, peptides, vitamins, etc. The beverage can enhance and regulate immune function of human body, protect liver and improve eyesight, regulate intestinal microflora, resist aging, protect skin and beautify appearance, eliminate fatigue, prevent cardiovascular and cerebrovascular diseases, etc.