The invention provides a traditional Chinese medicinal diet for regulating damp-heat constitution and a preparation method thereof. The traditional Chinese medicinal diet comprises the following components: Chinese dates, roasted astragalus membranaceus, radix codonopsis, fried bighead atractylodes rhizome, poria, fried rhizoma atractylodis, roasted magnolia officinalis, wrinkled gianthyssop herb, fried coix seed, lotus seed, semen euryales, yam, fried semen lablab album, fructus amomi, dried tangerline peel, fructus aurantii, platycodon grandiflorum, costusroot, roasted liquorice, folium eriobotryae, fructus cannabis, folium artemisiae argyi, sophora flavescens, motherwort, rhizoma alismatis, rhizoma smilacis glabrae, lotus leaf, corn stigma, pawpaw, dandelion, lophatherum gracile, cape jasmine, herba houttuyniae, longan pulp, raw ginger, brown granulated sugar and starch syrup. The traditional Chinese medicinal diet uses natural food materials, materials with drug and food functions and materials for health-care foods as main raw materials, has the effects of tonifying qi and strengthening spleen, tonifying lung and kidney, clearing damp and promoting diuresis, clearing heat and eliminating dampness, promoting and regulating qi, regulating qi movement of a human body, and the like, and has an excellent effect for regulating the damp-heat constitution.