The invention relates to a maize silk beverage and a preparation method, and belongs to the technology field of food processing. The components of the maize silk beverage comprise maize silk extracted fluid, xylitol, malic acid, citric acid, etc. The invention has the preparation method that the maize silk beverage is made through the processes such as preparing, blending, canning, and sterilizing, etc. of the maize silk extracted fluid; the maize silk extracted fluid comprises the preparation process that maize silks are screened, soaked, washed, dried, and crushed; the extraction process is restricted by the key technical parameters such as suitable particle sizes of the maize silks, solid-liquid ratio, extracting temperature and time, etc., and then the methods such as rough filtration, fine filtration, auxiliary clarificant, etc. for clarification. The maize silk beverage made by the method well retains the efficacy and drinking safety of the maize silks, has the efficacies of flavones and polysaccharides, ahs the advantages of high ingredient content, remarkable efficacy on human body care, convenient drinking, simple storage method, long shelf life, etc., and has wide market prospect.