Belonging to the technical field of Chinese medicine preparation methods, the invention relates to a preparation method of a Chinese medicinal lotion treating chilli preferring-type cellulitis. Current treatment of chilli preferring-type cellulitis generally employs antibiotics and sulfonamides, and has the disadvantage of great side effects. A technical scheme adopted by the invention consists of: taking Chinese Brake Herb, Ailanthus altissima Swingle, Dysosma versipellis, Indian Stringbush Roots, Saururus chinensis, barberry roots, folium isatidis, garden euphorbia herb, Longhairy AntenoronHerb, Rohdea japonica roots, Aster ageratoides, Radix Sophorae Tonkinensis, Asarum sagittarioides, climbing groundsel herb, Huperzia Serrata, Japanese Stephania Roots, Thymifoious Euphorbia Herb, meadowrue roots and rhizomes, portulaca oleracea, Coriaria sinica leaves, Sophora flavescens, Folium llicis Latifoliae, rhizoma coptidis, phellodendron, broomjutre sida herb, Ilex rotunda Thunb, StarwortRoots, bitter gourds and licorice, and placing the 29 medicine into water for immersion, then conducting decocting with slow fire, and carrying out filtration to remove the residue, thus obtaining a liquid medicine, i.e. the Chinese medicinal lotion treating chilli preferring-type cellulitis. The prepared Chinese medicine has the advantages of simple preparation, small toxic and side effect, short treatment course, and high curative rate.