The invention discloses cooling tea with bitter gourd and a preparation method of the cooling tea. The cooling tea comprises the following materials in parts by weight: 80-90 parts of sliced bitter gourd, 20-30 parts of mint leaf, 20-30 parts of shredded pericarpium citri reticulatae, 20-30 parts of bracteantha bracteata, 20-30 parts of fructus gardeniae, 20-25 parts of granulated sugar, 7-9 parts of periwinkie meat, 10-12 parts of watermelon juice, 2-3 parts of fresh rosa chinensis, 3-4 parts of belgium endive, 2-3 parts of platycladi seed oil, 4-5 parts of physalis pubescens, 3-4 parts of water caltrop kernel, 4-5 parts of cheese, 5-7 parts of rolled mutton, 0.5-1 part of cortex cinnamomi, 0.5-1 part of codonopsis pilosula, 1-2 parts of radix puerariae, 1-2 parts of tuber fleeceflower stem, 1-2 parts of dandelion, proper amount of water and 40-50 parts of nutritional additive. The cooling tea disclosed by the invention is novel in process and unique in taste, is fragrant and pleasant, and has the effects of removing toxicity, decreasing internal heat, clearing heat, quenching thirst and reducing blood pressure; and the added traditional Chinese medicines have the effects of invigorating the spleen and the stomach and tonifying qi, replenishing and restoring lung qi, tonifying qi and engendering body fluid and tonifying qi and producing blood.