The invention discloses persimmon oolong and a preparation method thereof. Persimmons are adopted as main raw materials, persimmon juice is made after pretreatment, astringency removal is carried out with oolong and honey, the materials are mixed according to the proportion of 1:(0.1-0.6):(0.1-0.5), sterilization is carried out, and a semi-finished product is obtained; then an acidity regulator, a preservative, vitamin C and a coloring agent are added into the semi-finished product, and a finished product is obtained after homogeneization. The persimmon oolong is reasonable in formula, sweet, soft, clear and fresh in taste, mellow in persimmon taste and convenient to carry, and can achieve the functions of reducing blood pressure, dredging bowls, dispelling the effects of alcohol and the like.