NOVELTY - A biomass and microbial biomass composite fuel comprising biomass, microbial biomass and useful flora; the biomass is selected from crop straw, rice hull, firewood, germ spongy branch, sawdust, wooden meal, branch tip, slab, truncation, forestry by-product offal, shell, kernel, manufacturing production offal, waste residue exhausted from the wire making, sugar manufacturing, food, medicine making and paper making industry manufacturing process.    USE - A biomass and microbial biomass composite fuel (claimed).    ADVANTAGE - The biomass and microbial biomass composite fuel is energy-saving and environmentally-friendly. It is also capable of using waste to generate the fuel.    DETAILED DESCRIPTION - A biomass and microbial biomass composite fuel comprising biomass, microbial biomass and useful flora; the biomass is selected from crop straw, rice hull, firewood, germ spongy branch, sawdust, wooden meal, branch tip, slab, truncation, forestry by-product offal, shell, kernel, manufacturing production offal, waste residue exhausted from the wire making, sugar manufacturing, food, medicine making and paper making etc industry manufacturing process; the microbial biomass is selected from city life sludge, industrial sludge, petrochemical sludge and biomass waste with a mass of microorganism germ group; microorganism germ group is selected from germ, pathogen, epiphyte, ray fungi, mycoplasma, chlamydia and leptospira; the useful flora comprises photosynthetic bacteria, lactobacillus, microzyme, ray fungi group, acetobacter and marsh gas germ. An INDEPENDENT CLAIM is a method for manufacturing the biomass and microbial biomass composite fuel comprising: (a) buying and storing material: (i) biomass which can be directly burnt, such as crop straw, rice hull, firewood, germ spongy branch, sawdust, wooden meal, branch tip, slab, truncation, forestry by-product offal, shell, kernel, manufacturing production offal, waste residue exhausted from the wire making, sugar manufacturing, food, medicine making and paper making etc. industry manufacturing process; (ii) city life sludge, industrial sludge, petrochemical sludge and biomass waste with a mass of microorganism germ group; microorganism germ group which can not be burnt directly, and (iii) cultured useful flora; (b) mixing the material (i), (ii), and (iii); (c) stirring mechanically and uniformly; (d) stacking and performing the bacterial chemistry reaction; performing the enzyme digestion, ferment-stacking and stuffiness processing; (e) reducing the liquid water content and drying; parching at low temperature or drying naturally; and (f) processing and forming.