Mulberry-medlar leaf beverage with function of asthenopia relieving, and preparation method thereof

The present invention relates to a mulberry-medlar leaf beverage with a function of asthenopia relieving, and a preparation method thereof. According to the mulberry-medlar leaf beverage, medlar leaf and mulberry are adopted as raw materials; decoction and centrifugation are performed; the obtained centrifugal liquid is added with an appropriate amount of a blueberry extract, an acid taste regulator, a sweeting agent and edible essence, and purified water is adopted to carry out blending; filtration is performed; high temperature short time sterilization is performed; and filling and secondary sterilization are performed to obtain the finished product. The mulberry-medlar leaf beverage has a health effect of asthenopia relieving, can be used for prevention of asthenopia syndromes in healthy people, and further can be used for adjuvant treatment of asthenopia people.