The invention discloses a Chinese materia medica preparation for treating borborygmus diarrhoea and a preparation method thereof. The Chinese materia medica preparation comprises the following components: Chinese pulsatilla root, common yam rhizome, stir-fried gordon euryale seed, parslane herb, costus root, nutmeg, largehead atractylodes rhizome, poria, voilet, longstamen onion bulb, areca peel, golden thread and tangerine peel. When the patient also obviously suffers from lumbago, cold intolerance, hypogastric pain and diarrhoea when getting up in the morning, the Chinese materia medica preparation is added with cassia bark, south dodder seed, Chinese magnoliavine fruit and rehmannia glutinosa. When the patient suffers from obvious bellyache, abdominal distension and pain reduction after diarrhoea, the Chinese materia medica preparation is added with officinal magnolia bark, bitter orange, white paeony root, kudzu-vine root and divaricate saposhnikovia root. When the patient suffers from poor appetite and apepsia, the Chinese materia medica preparation is added with charred triplet and chicken's gizzard-membrane. The Chinese materia medica preparation of the invention has effects of calming the liver and relieving pain, regulating Qi and strengthening the spleen, tonifying spleen, lungs and kidney, tonifying middle-Jiao and Qi and lifting yang and relieving diarrhea, mainly treats symptoms of acute and chronic enteritis, colonitis, borborygmus diarrhoea caused by liver-yang hyperactivity and weak spleen and stomach, poor appetite and loose stools, limb tiredness and hypodynamia, pain releasing after diarrhoea, repeated attacks and the like, has simple formula and low manufacturing cost and can be popularized and used.