The invention relates to a reinforced vertical flow filter bed which is in a round structure comprising two semicircles, an anti-seepage membrane is laid at the bottom of the filter bed, a water collecting pipe is laid on the anti-seepage membrane, and both ends of the water collecting pipe are respectively connected with a ventilation pipe; a ground substance is filled inside the filter bed, and plants are planted on the surface of the filter bed; and a main water distributing pipe is respectively distributed on the two semicircles of the filter bed along the diameter direction of the filter bed, and branch water distributing pipes communicated with the main water distributing pipes are semicircularly and outwards radially arranged from the center of the filter bed. By adopting the round vertical flow filter bed structure, not only the module production of facilities can be realized, but also the water distribution on the surface of the filter bed is more uniform and comprehensive, the filter bed structure is more stable and attractive, more building areas and materials are saved, and the reinforced vertical flow filter bed is a higher-efficiency manual filter bed sewage treatment system, thereby solving the problems of imperfect treatment and the like caused by dead angles in a square filter bed. The facility is suitable for the treatment of rural domestic sewage, urban landscape water, lake sewage and the like, and has the characteristics of high treatment efficiency, good landscape effect, resource saving, flexible operation, wide application range and the like.