The invention discloses heat-clearing, detoxifying and blood-pressure-reducing tea. The tea comprises the following components in part by weight: 50-70 parts of altemanthera, 1-5 parts of wild chrysanthemum flowers, 5-15 parts of
lotus leaves, 8-12 parts of folium mori, 7-12 parts of bamboo leaves and 2-5 parts of
bamboo salt. A preparation method of the tea comprises the following steps: weighing the raw materials in part by weight; adding water, of which the weight is 1 to 2 times the total weight of the raw materials, into a container; boiling the water for 3 to 5 minutes, adding 50-70% by weight of
bamboo salt into the water, adding baking soda as a color
retention agent into the
bamboo salt solution, placing the fresh altemanthera, the wild chrysanthemum flowers, the
lotus leaves, the folium mori and the bamboo leaves into the bamboo
salt solution to be subjected to water removal while stirring, adding baking soda when the weight of the solution is reduced to 50-70%, and finally adding the rest bamboo salt; after the rest bamboo salt dissolves for 5-20 minutes, taking out and
drying the altemanthera, the wild chrysanthemum flowers, the
lotus leaves, the folium mori and the bamboo leaves; pulverizing and sterilizing the dried raw materials, and then encapsulating the dried raw materials to obtain the heat-clearing, detoxifying and blood-pressure-reducing tea. The preparation method is simple; and the tea has the effects of clearing heat, detoxifying and reducing
blood pressure.