The invention relates to the technical field of garbage treatment, and discloses a kitchen garbage fermentable treatment device. The kitchen garbage fermentable treatment device comprises a 
fermentation tank, a feeder, a temperature and PH value 
detector, a one-way valve, a 
biogas storage device and a deodorization device. 
Biogas generated by fermenting kitchen garbage is accumulated in the 
fermentation tank, then ascends, and then pushes a rotating 
impeller, so power is transmitted to the stirring 
impeller through a transmission device; the stirring 
impeller is enabled to stir the kitchen garbage at a certain speed in the 
fermentation tank, so the spreading and heating uniformity of the 
biogas in the fermentation tank is improved, and meanwhile, the emission and ascending rate of the 
biogas is increased; and thus, a biogas collection speed is accelerated, and the 
decomposition rate of the kitchen garbage is increased. Hot water in a sterilization tank is introduced into the fermentation tank to heat the fermentation tank and keep an optimal 
reaction temperature, so the 
decomposition rate is further increased, and 
decomposition time is shortened; and thus, kitchen garbage treatmentefficiency is further improved, the 
utilization rate of biogas is increased, the consumption of 
external energy sources is reduced, and garbage treatment cost is lowered.