The invention provides a traditional Chinese medicine preparation for treatment of idiopathic trigeminal neuralgia. The traditional Chinese medicine preparation is prepared from the following raw materials in parts by weight: 10-20 parts of flos eriocauli, 10-20 parts of rhizoma cyperi, 10-20 parts of rhizoma zedoariae, 10-20 parts of rhizoma ligustici wallichii, 10-20 parts of semen platycladi, 10-20 parts of corydalis yanhusuo, 10-20 parts of saposhnicovia divaricata, 10-20 parts of gastrodia, 10-20 parts of periostracum cicada, 10-20 parts of polygala tenuifolia, 10-20 parts of fructus ligustri lucidi, 10-20 parts of gentiana scabra bge, 10-20 parts of tuber fleeceflower stems, 10-20 parts of scutellariae barbatae, 10-20 parts of salvia miltiorrhiza, 10-20 parts of radix paeoniae alba, 10-20 parts of angelica sinensis, 10-20 parts of fructus viticis, 10-20 parts of uncaria, 10-20 parts of scorpion, 10-20 parts of epimedium, 10-20 parts of white batryticated silkworm, 10-20 parts of lumbricus, and 10-20 parts of mother-of-pearl. The traditional Chinese medicine preparation disclosed by the invention is implemented by taking expelling wind and relieving convulsion, eliminating phlegm and dissolving turbidity, suppressing hyperactive liver and subsiding yang, relieving muscular spasm and tranquilizing the mind as a principle. The preparation integrates the effects of improving pain, realizing herbal treatment and resisting spasm, so that damaged cranial nerves can be restored and regenerated fundamentally; and by using the interaction of drugs, side effects which are possibly caused by western medicines are offset or resisted, so that the preparation can be taken at ease by patients; and the preparation takes effect quickly, and has a good long-term curative effect, and the idiopathic trigeminal neuralgia treated by using the preparation is difficult to recur.