The invention relates to a pure traditional Chinese medicine composition for resisting eimeria tenella. The pure traditional Chinese medicine composition for resisting eimeria tenella comprises the following bulk pharmaceutical chemicals: sweet wormwood herb, herba polygoni avicularis, herba agrimoniae, the root of Chinese pulsatilla, rhizoma curcumae longae and cortex cinnamomi. The invention also relates to a preparation method of a traditional Chinese medicine composition granule for resisting eimeria tenella. The invention develops the traditional Chinese medicine composition for resisting eimeria tenella aiming at the disease characteristics of morbidity of chickens according to a Chinese veterinary medicine theory and the clinical characteristics of a coccidiosis; the traditional Chinese medicine composition adopts clearing away heat and toxic materials, removing dampness and destroying parasites, and checking dysentery and stopping bleeding as principles of formulating prescription for prescription formulating; multiple set prescriptions are subjected to therapeutic experiments for resisting eimeria tenella and the traditional Chinese medicine composition is obtained through screening.