The invention relates to the technical field of traditional Chinese medicines, and in particular relates to traditional Chinese medicine convulsion-relieving and nerve-calming pills / soup for treating mental disease and a preparation method thereof. The traditional Chinese medicine for treating mental disease is prepared from the following raw materials by weight: 6-10g of common selfheal fruit-spike, 6-10g of dwarf lilyturf root, 6-12g of raw gardenia, 6-12g of raw rhubarb, 6-12g of dried rehmannia root, 6-20g of gypsum, 10-30g of fried spina date seed, 6-15g of grassleaf sweelflag rhizome, 8-12g of red-rooted salvia root, 6-10g of thinleaf milkwort root-bark, 10-15g of Chinese thorowax root, 0.6-1g of calculus bovis, 3-6g of arisaema cum bile, 10-15g of poria with hostwood, 8-10g of turmeric root-tuber, 15-30g of raw dragon bone, 10-15g of costus root, 2-4g of amber, 2-4g of water buffalo horn powder, 0.5-1g of edible gold foil, 0.3-0.5g of cinnabar, 3-10g of bamboo shavings and 3-6g of raw liquoric root. The traditional Chinese medicine is a traditional Chinese medicinal preparation which has the characteristics of stable effect, safety, reliability, no addiction or dependence, no side effect, and quick response, has the effects of relieving convulsion and calming nerves, discharging fire, relieving restlessness, removing heat to cool blood, and promoting qi circulation and relieving depression, and particularly has remarkable treatment effects on mental disease patients having the symptoms of annoyance, anxiety, panic, insomnia, coma and mania. A novel way is opened up for the treatment of mental disease patients. According to clinical observation of 103 cases, the total effective rate is over 98 percent, and the curative rate is up to 85 percent.