The invention relates to a compound tea seed powder foot bath agent, made from tea seed powder, Alpinia japonica, bamboo leaf, mugwort, Radix Sophorae Flavescentis, Cortex Pseudolaricis, Cortex Dictamni, radish, garlic, pomelo peel and Xanthoxylum pepper; a preparation method comprises: taking the Alpinia japonica, mugwort, bamboo leaf, Radix Sophorae Flavescentis, Cortex Pseudolaricis, Cortex Dictamni, radish leaf, garlic, pomelo peel and Xanthoxylum pepper, crushing with a traditional Chinese medicine crusher to obtain powder less than 40-60 mesh, stirring well, adding parts by weight of the tea seed powder into a container, and hermetically storing at normal temperature. Eleven Chinese herbs are added and compounded in the formulation, the unique pharmacological actions of the Chinese herbs are used to provide the effects of removing damp and stopping itching, drying dampness and killing insects, cleaning skin, killing foot germs, removing foot odor, removing peeled skin and assisting in improving foot skin, the agent is natural and nonirritating, free of side effect and chemical residue, and suitable for long-term usage.