NOVELTY - An intensified vertical-current filter bed, which is a circular structure with two half circles, comprises a seepage-proof film that is placed on a bottom part; a water collecting pipe that is placed on the seepage-proof film; a substrate that is filled in the inner part of filter bed; and plants that are planted on surface of filter bed. Each of two half circles is provided with a water distributing head pipe. Water distributing branched pipes are arrayed via radiating outwards from the center of the filter bed in a shape of semicircle.    USE - Intensified vertical-current filter bed used for treating domestic sewage in rural area, urban landscape water and lake sewage.    ADVANTAGE - The water is distributed on the surface of filter bed uniformly. The structure of the filter bed is stable and beautiful, and the area and the material of the building can be saved. The filter bed is an efficient manual filter bed sewage treating system, which solves the problem that the treatment is not complete enough since the square filter bed has dead corners. The filter bed is high in treating efficiency, good in landscape effect, and resource-saving.    DETAILED DESCRIPTION - An intensified vertical-current filter bed, which is a circular structure with two half circles, comprises a seepage-proof film that is placed on a bottom part; a water collecting pipe that is placed on the seepage-proof film, and having two ends, each connected with a breather pipe; a substrate that is filled in the inner part of filter bed; and plants that are planted on surface of filter bed, along the direction of the diameter of the filter bed. Each of the two half circles of the filter bed is provided with a water distributing head pipe. Water distributing branched pipes communicated with the water distributing head pipes are arrayed via radiating outwards from the center of the filter bed in a shape of semicircle.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic view of the intensified vertical-current filter bed.