The invention belongs to the field of microbial fermentation feed, and provides fermented traditional Chinese medicine feed for livestock as well as a preparation method and a feeding method of the fermented traditional Chinese medicine feed. The microbial fermentation traditional Chinese medicine feed comprises the following raw materials: traditional Chinese medicine components, a mixed probiotic agent and fermentation auxiliary materials. The traditional Chinese medicine components comprise astragalus membranaceus, codonopsis pilosula, pericarpium citri reticulatae, radix isatidis, honeysuckle, poria cocos, the root of kudzu vine, dandelion and radix angelicae; the probiotics comprise bifidobacterium animalis, enterococcus faecalis, bacillus amyloliquefaciens, lactobacillus plantarum, saccharomyces cerevisiae, candida utilis and bacillus natto; the fermentation auxiliary materials comprise corn flour, soybean meal and fish meal; according to the feed provided by the invention, the traditional Chinese medicines are fermented through beneficial microorganisms, so that the effective active ingredients of the traditional Chinese medicines fully play roles, and meanwhile, the microorganisms generate secondary metabolites such as various enzymes, so that the digestion of livestock on nutritional ingredients in the feed can be facilitated, the growth of the livestock is effectively promoted, and the feed conversion rate is increased; the immunocompetence and disease resistance of the poultry are obviously improved.