The invention discloses a pure Chinese medicinal preparation for treating mental illness, which is prepared from Chinese angelica, szechuan lovage rhizome, peach seed, Chinese thorowax root, radix curcumae, beautiful sweetgum fruit, fructus citri immaturus exsiccatus, dwarf lilyturf tuber, costustoot, nutgrass galingale rhizome, wrinkled gianthyssop herb, flos chrysanthemi, dried orange peel, pinellia tuber, cortex magnoliae officinalis, areca seed, oriental waterplantain rhizome, liquorice root, Chinese ligusticum rhizome and semen trichosanthis in a certain weight ratio. The medicament of the invention can be prepared into any common oral administration formulation. In a prescription of the invention, the medicaments have the excellent synergistic effect on the curative effect through reasonable compatibility; channels and collaterals are dredged through liver rejuvenation, vigoration of blood circulation, promotion of qi circulation, xeransis, phlegm elimination and melancholy dispelling, and the circulation of qi and blood all over the bodies of patients is regulated, so that the qi, blood and body fluid are evacuated normally, and viscus organs are promoted to perform normal physiological activity; and therefore, the viscus function operates normally and diseases are cured. Compared with the prior art, the pure Chinese medicinal preparation has the advantages of quick response, high cure rate, relapse prevention, no toxic or side effect and easy acceptance by the patients.