Biological fertilizer solid fermentation tank

The utility model relates to the technical field of fermentation devices, and discloses a biological fertilizer solid fermentation tank which comprises a supporting table, a fermentation tank body and supporting legs, a stirring mechanism is arranged in the fermentation tank body, and a buffering and damping mechanism is arranged on the outer wall of the fermentation tank body; the stirring mechanism comprises a motor, a partition box, a rotating shaft, a rotating rod, stirring blades, an annular groove, a rotating groove, a gear, an annular toothed plate and a supporting rod, one end of the rotating shaft is fixedly installed at the output end of the motor, the rotating shaft penetrates through the top end of the fermentation tank body, and the outer wall of the rotating shaft is rotationally connected with the fermentation tank body through a first bearing. The biological fertilizer in the fermentation tank body can be transversely and longitudinally stirred, so that the biological fertilizer is stirred mor