The invention discloses traditional Chinese medicine for treating epilepsy and a preparation method thereof. The traditional Chinese medicine for treating epilepsy is prepared from tuckahoe, immature bitter orange, fossil fragment, oyster, almond, tangerine, rhizoma pinellinae praeparata, arisaema cum bile, dry ginger, lygodium japonicum, rheum officinale, Chinese magnoliavine fruit, chlorite schist, areca-nut, uncaria, unibract fritillary bulb, red-rooted salvia root, codonopsis, acorus gramineus, rubus alceaefolius poir, geum aleppicum, scutellaria baicalensis, Chinese thorowax root, amber, goldthread, cicada slough, phymatopsis hastata, antelope horn, gold leaf, centipede, scorpio, zaocys dhumnade, stiff silkworm, peristrophe, Chinese polyphaga, magnet, passion fruit, ruddle, cocklebur fruit, earthworm, white paeony root, red-spotted stonecrop, notopterygium root, radix curcumae, elecampane, nutgrass galingale rhizome, chloranthus, Pallas's fish eagle, mica, bear gall, calculus bovis, gastrodia elata and alum. The clinical experiment proves that the traditional Chinese medicine is capable of safely and effectively treating epilepsy.