NOVELTY - The device has inner wall of continuous solid fermentation tank (105) that is mounted on groups of cloth plate mounted with adjustable angle, and is used for stirring the degree of material and control material flow speed in the same group of distribution cloth plate. An exhaust port (107) is between fermentation tank and discharge outlet of discharge spiral feeder (114), and is provided with breather valve (108). The discharging spiral feeder is connected with continuous solid fermentation tank by mechanical seal, which subsequently seal the connection.    USE - Automatic-continuous control solid fermentation device for preparing fuel ethanol.    ADVANTAGE - Necessary time for strain anaerobic environment is ensured, since the pressure is controlled by the exhaust port provided with breather valve, and pressure is maintained by the mechanical seal, sealing the connection between spiral feeder and fermentation tank. The continuous solid fermentation process is efficient and realized, since the proper angle of the fermentation tank with the rotating speed is improved, so that material can be moved smoothly and in stable manner. Production efficiency is improved since utilization rate of the fermentation tank is improved by eliminating manual unloading. Production cost and energy consumption is reduced since labor intensity is reduced. Enables to change material mixing degree and control flow speed to different stages for different needs, so to ensure normal fermentation and provide certain control function, since the fermentation tank cloth plate can be adjusted flexibly.    DETAILED DESCRIPTION - The sugar raw material has CGMCC1949 that is used as strain for fermentation. An INDEPENDENT CLAIM is also included for a preparing method for fuel ethanol continuous solid fermentation process.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of the automatic control continuous solid fermentation device.    Continuous solid fermentation tank (105)    Exhaust port (107)    Breather valve (108)    Gear machine driving device (112)    Discharge spiral feeder (114)