The invention discloses a traditional Chinese medicine composition for treating acute cholecystitis and a preparation method thereof and belongs to the technical field of medicines. The traditional Chinese medicine composition comprises the following components: fructus aurantii, common andrographis herb, arisaema cum bile, cape jasmine fruit, sophora flower, pulvis fellis suis, the root of red-rooted salvia, corydalis tuber, prepared rehmannia glutinosa, lalang grass rhizome, Lilium brownii, honeysuckle, dandelion, rhizoma alismatis, medlar, bighead atractylodes rhizome, Ligusticum wallichii, radix angelicae, Cacumen biotae, Mangnolia officinalis, curcuma zedoary, Cape jasmine fruit, oriental wormwood, radix paeoniae alba, edible tulip, rhizoma zingiberis and liquorice. The traditional Chinese medicine composition has a good treatment effect in the aspect of treating or preventing acute cholecystitis, has a small side effect and has an obvious clinical popularization value.