The invention relates to a drug for treating epilepsy. The drug is characterized by being prepared from the following components: poria cocos, fossil fragment, concha ostreae, ramulus uncariae cum uncis, bighead atractylodes rhizome, rhizoma acori graminei and rhizoma arisaematis, and the ratio of the components is as follows: 20g of the poria cocos, 20g of the fossil fragment, 15g of ramulus uncariae cum uncis, 10g of the bighead atractylodes rhizome, 10g of the rhizoma acori graminei, and 6g of the rhizoma arisaematis. A production and taking method is as follows: weighing the herbs according to a weight ratio, decocting with water by slow fire, collecting medicine liquid, and orally taking one dose of the medicine liquid per day. The drug for treating the epilepsy is used to solve the problems that an existing drug for treating the epilepsy has a severe side effect and addiction, is long in taking time and high in recurrence rate after the drug is stopped, and cannot effect a radical cure, and the like, and is suitable for treating the epilepsy.