Cutting and fermenting device for preparing corn silage and preparation method of corn silage

The invention provides a cutting and fermenting device for preparing corn silage and a preparation method thereof, and belongs to the technical field of agricultural equipment.The cutting and fermenting device comprises a machine box body, the machine box body is of a long-strip-shaped structure, and the cutting and fermenting device is arranged in the machine box body from the inlet direction to the outlet direction; a feeding mechanism, a feeding mechanism, a cutting mechanism, a pressing mechanism, a screening mechanism and a bundling mechanism are sequentially installed on the machine body. The feeding mechanism is aligned with the feeding mechanism; the feeding mechanism comprises a plurality of sets of rollers, and a pressing conveying mechanism with the outlet direction close to the pressing mechanism is arranged below the cutting mechanism. The outlet direction of the material pressing mechanism is aligned with the screening mechanism; the screening mechanism is provided with a material returning and