The invention discloses a special 
fermentation microbial inoculum for sugarcane by-product feed and a preparation method thereof. The 
fermentation microbial inoculum comprises special domesticated 
bacteria freeze-dried 
powder and freeze-dried 
powder of various active ingredients such as candida utilis, 
lactobacillus plantarum, 
bacillus subtilis, 
aspergillus niger, 
aspergillus oryzae, 
trichoderma viride and the like, which can effectively degrade sugarcane by-products such as sugarcane 
tail tips, 
bagasse, molasses and the like, and each strain is coordinated and matched with each other, so thatthe method has the advantages of high 
fermentation efficiency, high speed, low 
energy consumption, high conversion rate and good stability. 
Domestication bacteria used by the fermentation microbial inoculum are from nature, and are obtained through enrichment, screening and 
domestication, which have super strong propagation and adaptability, can decompose 
cellulose in sugarcane by-products in a targeted manner, high molecular carbohydrates which are difficult to be fully digested and absorbed by animals such as crude 
fiber, 
lignin and the like can be converted into low molecular substances which can be absorbed and utilized, meanwhile, the content of crude 
protein in fermentation feed is improved, and 
nutrition and 
palatability of feed are improved.