NOVELTY - Sewage microorganism processing device, comprises reaction tank, water, first short clapboard, second clapboard and long clapboard, reactor, short clapboard, and second clapboard and long baffle plate are provided with first short baffle plate.    USE - As sewage microorganism processing device.    ADVANTAGE - The sewage microorganism processing device can realize single-side circulation caused by sewage staying time is short, cannot fully contact with active sludge, and reduces problem of the sewage treatment efficiency in the processing device.    DETAILED DESCRIPTION - Sewage microorganism processing device, comprises reaction tank, water, first short clapboard, second clapboard and long clapboard, reactor, short clapboard, second clapboard and long baffle plate are provided with the first short baffle plate, where the first short baffle plate is vertical to the bottom surface of the reaction tank, second clapboard and long clapboard divides the reactor into first aeration chamber, reaction chamber, second aeration chamber and water purifying cavity, first aeration chamber corresponding to the reactor on side wall is provided with water inlet, purified water cavity corresponding to the reactor on side wall is provided with water outlet, water outlet is lower than the water inlet, first short clapboard and second short clapboard are lower than the upper end face of the upper portion, short partition board, second baffle plate and lower end face of the reactor bottom surface of the inner cavity of the distance is less than the long baffle plate and lower end face of the reactor bottom surface of the inner cavity of the distance H, long clapboard of the upper end reactor is higher than the upper end face of the water cylinder is set in the reaction chamber, clean water on the side wall of the groove is provided with multiple small holes, bottom of the water cylinder is purified water outlet, first aeration chamber corresponding to the reactor is provided with first aeration hole, and second aeration chamber corresponding to the reactor is provided with second aeration hole.