The invention discloses a 
traditional Chinese medicine composition for treating Crohn's 
disease and a preparation method and application thereof. The 
traditional Chinese medicine composition comprises, by weight, 8-15 parts of root, leaf and seed of 
Euonymus tobira Thunb., 22-30 parts of Herba Saginae Japonicae, 34-39 parts of 
polygala japonica and 5-12 parts of 
Passiflora wilsonii Hemsl.. The preparation method includes: mixing the root, leaf and seed of 
Euonymus tobira Thunb. with mixed liquid, 
drying, and 
grinding to obtain the 
powder of the root, leaf and seed of 
Euonymus tobira Thunb.; mixing the Herba Saginae Japonicae, the 
polygala japonica and the 
Passiflora wilsonii Hemsl., decocting with water, filtering, and concentrating under reduced pressure to obtain clear paste with the 
relative density being 1.05 under 45 DEG C; mixing the 
powder of the root, leaf and seed of Euonymus tobira Thunb. with the clear paste, and 
drying to obtain the 
traditional Chinese medicine composition. The traditional Chinese 
medicine composition has the advantages that the medicinal components of the traditional Chinese 
medicine composition are coordinated to achieve a good 
curative effect on the Crohn's 
disease, the total effective rate of the traditional Chinese 
medicine composition reaches 100%, and the traditional Chinese medicine composition is harmless to the heart, 
liver and kidney, definite and stable in 
curative effect, free of relapse and deterioration after cure, free of toxic and 
side effect, simple in preparation process, easy to prepare, low in cost and suitable for industrial production.