The invention discloses a traditional Chinese medicine composition for treating gynecological diseases and a preparation method thereof. The traditional Chinese medicine composition for treating gynecological diseases is prepared by cassia twig, white paeony root, dried ginger, liquorice, rhizoma atractylodis, golden cypress, radix sophorae flavescentis, rhizoma cyperi, curcuma zedoary, fennel, bupleurum chinense, rhizoma arisaematis, clove, cinnamon, asarum, rhizoma corydalis, ligusticum wallichii, red flower, pinellia ternate, poria cocos, myrobalan, root of three-nerved spicebush, rhizoma sparganii, rheum officinale, leech, monkshood, dried body of ground beetle, folium artemisiae argyi, fructus evodiae, garden balsam stem, Sichuan pepper, gallnut, pericarpium zanthoxyli, fingered citron, purple perilla, hawthorn, peach seed, cordyceps mycelium, coix seed, lalang grass rhizome, table salt and alumen. According to the traditional Chinese medicine composition for treating gynecological diseases, the multiple materials are mixed, and mutual coordination or resistance effect of the materials are used, so that the effect of treating the various gynecological diseases is improved, untoward effect is reduced, treatment effect is significant and durable, the medicine composition is quick to absorb, safe and reliable, and simple to take, and can fundamentally treat the various gynecological diseases to relieve pain of patients.