The invention discloses a 
traditional Chinese medicine composition for treating chicken 
coccidiosis and a preparation method thereof, and belongs to the technical field of veterinary 
traditional Chinese medicine. The 
traditional Chinese medicine composition is mainly composed of the following traditional Chinese herbals in parts by weight: 20 to 60 parts of dichroae radix, 20 to 60 parts of hairyvein agrimony, 10 to 30 parts of Chinese pulsatilla root, 10 to 30 parts of purslane, 10 to 20 parts of 
euphorbia humifusa, 10 to 20 parts of 
phellodendron, 30 to 90 parts of sweet wormwood, 5 to 15 parts of 
brucea javanica, 20 to 40 parts of 
sophora flavescens, 10 to 20 parts of 
rheum officinale, and 20 to 60 parts of radix astragali. The traditional Chinese herbals are compounded according to the principle of "monarch, minister, assistant and guide" in the traditional Chinese 
medicine theory. In the formula, dichroae radix, 
brucea javanica, and Chinese pulsatilla root have the functions of killing and dispelling parasites, clearing heat, removing 
toxicity, and promoting purgation to remove parasites, and are taken as the monarch drugs; the 
rheum officinale has the functions of cooling blood, stopping bleeding, promoting purgation, and removing stasis, and is taken as the minister 
drug; the 
phellodendron and 
sophora flavescens have the functions of clearing dampness and heat, dispelling wind, and killing parasites, and are taken as the assistant drugs; the radix astragali has the functions of tonifying middle-jiao and qi, strengthening 
body resistance to dispel pathogenic factors, and strengthening the 
immunity, and is taken as the guide 
drug; and the hairyvein agrimony, 
euphorbia humifusa, and purslane have the function of astringing to stop bleeding, and are taken as the guide 
drug too. The traditional Chinese 
medicine composition is mainly used to treat chicken 
coccidiosis and has the advantages of reliable 
curative effect and quick effect.