The invention belongs to the technical field of traditional Chinese medicine compositions, and particularly relates to a traditional Chinese medicine composition for treating Crohn's disease and application thereof. The invention discloses a traditional Chinese medicine composition for treating Crohn's disease. The traditional Chinese medicine composition is prepared from the following raw materials: 30 to 60 g of herba agrimoniae, 30 to 60 g of radix millettiae speciosae, 30 to 60 g of roasted radix puerariae, 15 to 30 g of rhizoma atractylodis macrocephalae, 15 to 30 g of poria cocos, 10 to 30 g of semen coicis, 5 to 15 g of fructus forsythiae, 5 to 15 g of herba artemisiae scopariae, 5 to 10 g of radix angelicae sinensis, 15 to 20 g of endothelium corneum gigeriae galli, 5 to 10 g of stiff silkworm, 10 to 20 g of fructus alpiniae oxyphyllae, 5 to 10 g of cortex moutan, 15 to 30 In the traditional Chinese medicine composition, hairyvein agrimony and beautiful millettia root serve as monarch drugs, bighead atractylodes rhizome, poria cocos, fructus alpiniae oxyphyllae and stewed radix puerariae serve as ministerial drugs, fructus forsythiae, moutan bark, stiff silkworm, thunberg fritillary bulb and angelica sinensis serve as adjuvant drugs, and oriental wormwood, endothelium corneum gigeriae galli and coix seeds serve as conductant drugs. Through the compatibility of monarch, minister, assistant and guide, the traditional Chinese medicine composition has the effect of inducing and relieving Crohn disease patients and has the tendency of promoting mucous membrane healing.