The invention discloses bitter gourd herbal tea and a preparation method of the bitter gourd herbal tea. The bitter gourd herbal tea is prepared from the following raw materials in parts by weight: 70-80 parts of bitter gourd pieces, 20-30 parts of florists chrysanthemum flowers, 20-30 parts of scaphium scaphigerum, 20-30 parts of honeysuckle, 20-30 parts of lophatherum gracile, 20-30 parts of lemon, 20-30 parts of mint leaves, 10-20 parts of liquorice, 13-16 parts of olive oil, 12-15 parts of mullet meat, 7-8 parts of fragrant-flowered garlic juice, 4-5 parts of club fungi, 5-6 parts of gluten, 5-7 parts of wick cakes, 4-6 parts of dry hawthorn fruits, 8-10 parts of malabar spinach, 9-11 parts of citrus, 7-9 parts of kiwi fruits, 1-2 parts of perilla leaves, 1-2 parts of broad bean flowers, 1-2 parts of radix ophiopogonis, 1-2 parts of cervus elaphus Linnaeus, 1-2 parts of peony flowers, a proper amount of water and 15-20 parts of nutritional additives. According to the invention, bitter gourd is taken as the main material, and the bitter gourd herbal tea has the efficacies of reinforcing blood capillary, promoting blood circulation, preventing arteriosclerosis, eliminating summer-heat by cooling, diminishing swelling and detoxifying, decreasing blood sugar and blood fat, and resisting inflammatory, and the added traditional Chinese medicines have the efficacies of nourishing the Yin, promoting glandular secretion, moistening lung and clearing away the heart-fire.