The invention provides a preparation method of a traditional Chinese medicine for treating roast pork adephagia hyperlipidaemia, and belongs to the technical field of preparation methods of traditional Chinese medicines, aiming at overcoming the shortage of the existing treatment of roast pork adephagia hyperlipidaemia that lipidemic-modulating drugs are generally adopted and produce large side effect. According to the technical scheme, the preparation method comprises the following steps of taking berberis julianae schneid, herba desmodii styracifolii, subprostrate sophora, lance asiabell root, edible tulip, stephania japonica, vervain, fig, hibiscus mutabilis, lantana camara, herba pteridis multifidae, persicaria hydropiper, ampelopsis japonica, solanum lyratum thunb, scrophularia ningpoensis, lobelia chinensis, hypericum japonicum, ardisia crispa, maidenhair, abrus cantoniensis hance, rhizoma anemarrhenae, houttuynia cordata, lespedeza cuneata, bat dung, sticktight, japanese white birch bark, calabash, water chestnut, brasenia peltata tursh, selfheal, dayflower, buta graveolens, bistort rhizome, cape jasmine, ovate leaf holly bark, chrysanthemum indicum, common alstonia, umbellate rock jasmine and liquorice; adding all the materials to water to be soaked; decocting with soft fire; and filtering to remove slag, thus obtaining the liquid medicine which is the traditional Chinese medicine for treating roast pork adephagia hyperlipidaemia. The traditional Chinese medicine has the advantages of small toxic and side effects, short treatment course and high cure rate.