The invention relates to herbal tea which comprises, by weight, 4%-7% of mulberry leaf, 1%-2% of bambusa chungii, 3%-8% of mulberry bud, 1%-2% of phyllanthus urinaria, 1%-2% of honeysuckle, 2%-3% of green bamboo snake green tea, 0.5%-1% of chrysanthemum, 0.5%-1% of waxgourd peel, 2%-5% of crystal sugar, 1%-2% of lily and 75%-81% of water. The preparation method includes: washing mulberry leaf, adding the mulberry leaf and water into a pot, boiling for 30 minutes, and filtering to obtain a solution A; mixing bambusa chungii, mulberry bud, phyllanthus urinaria, honeysuckle, green bamboo snake green tea, chrysanthemum and lily and grinding into powder to obtain a substance C; heating the solution A continuously, mixing the substance C into the solution and stirring after the solution is boiled, and heating for 10 minutes to obtain a substance D; and cooling the substance D till the temperature is between 10 and 20 DEG C, adding waxgourd peel and crystal sugar into the substance D, and stirring evenly to obtain finished products. The herbal tea is sweet and mellow in taste, can clear heat, and is good in effect of reducing internal heat and low in cost.