Disclosed is a traditional Chinese medicine for treating diarrhoea, prepared from the following raw materials in parts by weight : 12 parts of nutmeg, 15 parts of malaytea scurfpea fruit, 15 parts of medicinal evodia fruit, 10 parts of Chinese magnolia-vine fruit, 12 parts of shrub chaste tree fruit, 9 parts of divaricate saposhnikovia root, 9 parts of Chinese lovage and 6 parts of spine date seed. The traditional Chinese medicine can be prepared into a decoction, powders and capsules after decocting with water and combining the filtrate.