Use of Chinese medicine preparation in preparing a drug for preventing and/or treating Crohn's disease. The Chinese medicine preparation is made of 1% to 10% of dragon's blood by weight, 15% to 40% of red peony root by weight, 1% to 20% of natural indigo by weight, 1% to 10% of red halloysite by weight, 15% to 40% of catechu by weight, 1% to 10% of burnt alum by weight, 5% to 30% of Common Bletilla Tuber by weight, and 1% to 10% of calamina by weight.
