Sewage treatment device based on microbial fermentation

The utility model discloses a sewage treatment device based on microbial fermentation, which comprises a filter box, a stirring box is arranged above the filter box, a motor is fixedly mounted on the top side of the stirring box, a rotating shaft is fixedly mounted on an output shaft of the motor through a coupler, the bottom end of the rotating shaft extends into the stirring box, and a plurality of stirring rods are fixedly mounted on the rotating shaft. According to the sewage treatment device based on microbial fermentation, the motor runs to drive a plurality of stirring rods to rotate, microorganisms can make full contact with sewage for fermentation, large caked sewage impurities can be dispersed in the stirring process, full fermentation and decomposition of the microorganisms are facilitated, then the sewage is conveyed into a filter box through a discharging pipe for filtration, and the sewage treatment efficiency is improved. The filter box is internally provided with a screen, the fermented sewage