Fermentation method and device for biomass microenvironment regulation

The invention discloses a fermentation method of biomass microenvironment regulation, which comprises the following steps: crushing biomass; mixing the biomass with nitrogen-source ingredients to obtain a nutrient material, stirring uniformly, adjusting the pH to 6-9.5, controlling the water content to be 40-75%; charging the nutrient material into a fermentation device, decomposing the biomass with bacterial community, decomposing the biomass with fungus community, and finally decomposing the biomass with actinomycete community. The fermentation device comprises an imitating rumen, a reticulum, and an omasum, wherein the imitating rumen is a big shed with an air inlet and an air outlet; the reticulum is disposed in the imitating rumen; the reticulum comprises a basket body with an air vent; the omasum is disposed in the reticulum; the omasum comprises a hollow-out cylinder and a cushion; the cushion is disposed on the hollow-out cylinder; a heat-dissipating oxygen vent is disposed onthe cushion; the vent wal