The invention relates to a preparation method of a traditional Chinese medicine for treating hyperlipemia caused by overeating pig intestines, belonging to the technical field of preparation methods of traditional Chinese medicines. The existing method for treating hyperlipemia caused by overeating pig intestines generally adopts lipid regulators, and has the defect of great toxic and side effects. The technical scheme is as follows: the preparation method comprises the following steps: taking fig, shrubalthea bark, Hibiscus mutabilis, droughtdysentery holarrhena bark, Patience Dock Root, ilex pubescens, sugar cane, umbilicaria esculenta, gypsum, gentian, freshwater snail, ampelopsis root, indigowoad root, balsam pear, broadleaf holly leaf, Elephantopus scaber, giant knotweed, Herba Patriniae, tinospora root, tropaeolum, honeysuckle flower, Bidens biternata, Lespedeza cuneata, hypericum perforatum, stringy stonecrop, sagina subulata, orange, sticktight, creat, Cortex Fraxini, birch bark, calabash, water chestnut, Plumula Nelumbinis, lotus leaf, hawthorn, malt, rice sprout and licorice; and soaking the traditional Chinese medicines in water, decocting with soft fire, and filtering to remove slag to obtain liquor, thereby obtaining the traditional Chinese medicine for treating hyperlipemia caused by overeating pig intestines. The prepared traditional Chinese medicine has the advantages of small toxic and side effects, short treatment course and high cure rate.