The utility model provides a miniaturized kitchen garbage biochemical treatment all -in -one with packing function, includes the rack, is equipped with stirring fermenting installation, deodorizing device, hydraulic pressure packing apparatus, automatically controlled cabinet and hydraulic pressure station in it, stirring fermenting installation and comprising reaction storehouse and material mixing mechanism, install the feeding door in the upper end feed inlet position of reacting the storehouse, external gas transmission pipeline is located to the upper end gas vent in reaction storehouse, and the gas transmission pipeline is connected through air exhauster and deodorizing device's air inlet, is equipped with main discharge gate at the lower tip that reacts the storehouse, hydraulic pressure packing apparatus establishes in the below in reaction storehouse, and it includes that the upper end is equipped with the box for the compression of feed hopper portion, and the feed inlet and the main discharge gate of feed hopper portion form down upward butt joint, and the feed inlet position is equipped with the feeding shutter who is connected with a driving hydraulic cylinder, is equipped with discharge baffle respectively and presses the material baffle in preceding, the both ends position compressed with the box, and second, the 3rd driving hydraulic cylinder are connected respectively to two baffles. The output thing of local production is convenient for stack, has reduced occupation space.