The invention discloses a solid-state fermentation device and system as well as a fermentation method. The fermentation device is divided into three parts with clear functions, namely, a working bin, a fermentation bin and a quantitative discharging bin, and the standard fermentation system is constructed. The quantitative discharging bin is controlled to discharge materials quantitatively every day, the working bin distributes the materials into the fermentation bin, quantitative material distribution is controlled, and the materials in the fermentation bin are fermented in a layered manner. Further, turnover boxes are adopted for discharging and are storage and transporters for fermented products. The components of the device are well combined, equipment maintenance and fermentation production as well as standard operation of the fermentation technology are guaranteed due to adoption of standard equipment, the automation degree is high, multiple groups of equipment can be combined for work while operators are not increased excessively, the management cost and the production cost are lower, mass production and mass operation are facilitated, and operation and control are easy, so that the fermented products as well as storage and transportation of the products are also standardized.