The invention discloses a special Shuichanling for culture of eel and a preparation method thereof. The special Shuichanling is prepared from the following components in parts by weight: 50 to 70 parts of pure natural allicin emulsifier, 10 to 20 parts of ethylicin, 8 to 18 parts of whey powder, 4 to 10 parts of radix geutianae, 5 to 10 parts of radix bupleuri, 3 to 8 parts of folium mangiferae, 4to 12 parts of flos chrysanthemi indici, 4 to 12 parts of flos paulowniae, 5 to 15 parts of semen plantaginis, 2 to 8 parts of honeysuckle flower, 6 to 19 parts of folium mume, 20 to 40 parts of herba houttuyniae, 15 to 25 parts of herba andrographitis, 8 to 19 parts of radix astragali seu hedysari, 2 to 10 parts of radix scrophulariae, and 3 to 8 parts of radix rehmanniae. The special Shuichanling has the advantages that the preparation method is simple, the preparation cost is low, the prepared special Shuichanling can be used for effectively preventing and controlling enteritis and liver and kidney diseases of the eel, the immunity of the eel is enhanced, and the growth of the eel is effectively promoted.