The present invention discloses a traditional Chinese drug microecology composition. According to the present invention, specifically mongolian milkvetch root, largehead atractylodes rhizome, divaricate saposhnikovia, dangshen, coptis chinensis, folium isatidis, weeping forsythia fruit, honeysuckle, heartleaf houttuynia herb, chinese thorowax root, common selfheal spike, cassia and a licorice root extraction liquid are adopted to culture Bacillus subtilis, Bnfillus licheniformis, animal Bacillus bifidus, lactic acid bacteria and Saccharomyces cerevisiae microbe to obtain the composite microecology traditional Chinese drug composition, wherein the composite microecology traditional Chinese drug composition has characteristics of green, safety, low cost, inhibition effects on harmful microorganisms in animal intestines, and improvement of non-specific immune function, provides a certain prevention and treatment effect for viral diseases, can be used as a livestock feed additive, and can further be used separately.