The invention discloses Chinese medicinal ointment for treating herpes zoster and a preparation method thereof, which belong to the technical field of Chinese medicinal ointment. The Chinese medicinal ointment consists of mongolian snakegourd root, red paeony root, cape jasmine fruit, baical skullcap root, amur corktree bark, rhubarb, swordlike atractylodes rhizome, officinal magnolia bark, tangerine peel, dahurian angelica root, curcuma longa, rhizoma kaempferiae, Chinese gall, flos caryophyllata, borneol, orpiment, alum, grilled nux vomica, centipede, myrrh, white pepper, yunnan manyleaf paris rhizome, raw arisaema root, raw pinellia rhizome and honey. According to the treatment principle of clearing heat and promoting diuresis, soothing liver-gallbladder, detoxicating and removing blood stasis, removing obstruction in channels to relieve pain, and purging the spleen and eliminating dampness, the Chinese medicinal ointment is selectively used aiming at the pathogeny and symptom of each patient during clinical treatment; the Chinese medicinal ointment has precise, appropriate and reasonable compatibility, and can be absorbed well by skins through the synthetic action of the medicaments; and after being absorbed, the medicaments perform function in vivo with blood circulation; the Chinese medicinal ointment has quick response, can treat the herpes zoster effectively and alleviate the pain of patients, and has the curative rate of 99 percent.