The invention discloses a cool selfheal, mulberry and chrysanthemum tea and a preparation method thereof. The cool selfheal, mulberry and chrysanthemum tea comprises the following raw materials in parts by weight: 100-110 parts of selfheal, 20-30 parts of mulberry leaves, 20-30 parts of mint leaves, 20-30 parts of chrysanthemum, 20-30 parts of cape jasmine, 20-30 parts of granulated sugar, 3-4 parts of polished round-grained rice, 8-9 parts of barley juice, 2-3 parts of walnut crisp, 6-7 parts of sea blubber skin, 9-10 parts of dragon fruit juice, 2-3 parts of bitter buckwheat seed powder, 3-4 parts of chopped green onion, 4-5 parts of purple lettuce, 2-3 parts of corn oil, 0.5-1 part of mulberries, 0.5-1 part of burdock root, 1-2 parts of sweet-scented osmanthus, 1-2 parts of fructus alpiniae oxyphyllae, 1-2 parts of fritillaria cirrhosa, a proper amount of water and 40-50 parts of a nutritional additive. The finished tea is rich in mouth feel and good in color, aroma and taste, and has the effects of dispelling wind and heat, nourishing the liver, improving vision, providing coolness, removing toxics, calming the heart and eliminating dysphoria; the added traditional Chinese medicines have the effects of reducing blood pressure, benefiting the spleen and stomach and tonifying the kidney and yang.