The invention relates to a traditional Chinese medicine composition for treating the gastrointestinal lymph and a preparation method thereof. The traditional Chinese medicine composition is prepared from typhonii rhizoma, prunellae spica, radix ranunculi ternati, bulbus fritillariae cirrhosae, fruticose dracaena leaf, centipede, poria, gecko house lizard, bletillae rhizoma, heartleaf houttuymia herb, scrophulariae radix, nelumbinis semen, lilii bulbus, sophorae flavescentis radix, stemonae radix, Geum japonicum, pangolin scales, sanguisorbae radix, seedling in cushaw and the like. The preparation method of the traditional Chinese medicine composition for treating the gastrointestinal lymph includes the steps that bulbus fritillariae cirrhosae, centipede, gecko house lizard, bletillae rhizoma and sophorae flavescentis radix are mixed in proportion and then ground to obtain mixed powder; after being smashed, the other components are mixed and then placed into water to be soaked, then, heating is conducted, the heated mixture is filtered, and collected filtrate is concentrated into extract; the mixed powder is added into the extract, the mixture and the concrete are mixed to be uniform, and the traditional Chinese medicine composition is obtained. The prepared traditional Chinese medicine composition has the effect of treating the gastrointestinal lymph such as gastrointestinal lymph gland inflammation and swelling, the therapeutic effect is obvious, and the prepared traditional Chinese medicine composition rapidly becomes effective and is convenient to use, safe and free ofside effects.