Method for preparing biomass fuel by utilizing industrial and agricultural waste

The invention relates to a method for preparing biomass fuel by utilizing industrial and agricultural waste. The method specifically comprises the following steps that S1, solid-liquid separation treatment is carried out on beef residues and cow hair waste, tea residues and grass residues as well as livestock and poultry manure separately to enable the moisture content of each raw material component to be 50%-60%, and meanwhile, tobacco stems are crushed and then are piled or bagged; S2, the raw material components subjected to solid-liquid separation are each inoculated with a microbial agent; S3, fermentation is carried out so as to prepare a fermented material; and S4, the fermented material is crushed and dried, and 10%-20% of bamboo chips with the water content less than 5% are addedinto the fermented material, and pressing is carried out so as to obtain biomass fuel particles. The biomass fuel prepared through the method has the advantages of being relatively high in combustionheat value, stable in comp