The invention discloses a sewage treatment device for a kitchen pool, comprising a box body, a water outlet, a water inlet, a filter pipe, a first connecting pipe, an activated carbon layer, a baffle, a U-shaped pipe, a drain pipe, a second connecting pipe, and a valve , round hole, ring, curved filter screen, rubber plug, first connecting rod, brush, piston disc, second connecting rod, fixed block and spring leaf. The invention is reasonable in structure and novel in design, and can prevent a large amount of vegetable leaves and rice grains from accumulating in the sewer to cause sewer blockage. For gathering, the vegetable leaves and rice grains accumulated in the box can be quickly taken out through the piston plate and the first connecting rod. At the same time, the arc-shaped filter can be cleaned by the brush to prevent the sieve holes on the arc-shaped filter from clogging, which can effectively Reduce the pressure on the wastewater treatment station.