Abstract: A kitchen waste treatment device in environment-protection-device field comprises a main fermentation barrel comprising a barrel body mounted on supporting brackets and including a feed inlet, a discharge outlet and a material chamber, push plates located within the material chamber to push materials therein to move along barrel body axial direction and further a gas inlet system having gas inlets located at same barrel body end as the discharge outlet and a gas-exhaust system having gas-exhaust ports located at same barrel body end as the feed inlet; a feeding apparatus whose feed end communicates with the feed inlet; and a power apparatus driving the barrel body to rotate around its axis. The gas inlets/gas-exhaust ports communicate with the material chamber. The treatment device has simple compact structure and small occupied area and realizes material horizontal propulsion and repeated rotational-stirring in the barrel body by barrel body rotation, achieving material-degrading-and-fermenting object.