The invention is a three-dimensional biological filtration system, which includes a plurality of water purification baskets, a plurality of biological filter materials, and a watering device. Each water purification basket has a side wall, a bottom wall, a central holding groove, an opening above, and the side wall The bottom wall is provided with several through holes, and the arrangement of the water purification baskets makes the side walls of adjacent water purification baskets close, and the water purification baskets are stacked so that the bottom wall of the upper water purification basket is above the opening of the lower water purification basket Position, and make a plurality of water purification baskets to form a filter bearing device； and the plurality of biological filter materials are arranged in the accommodating groove of the water purification basket； and the sprinkler device has an inlet pipe and an outlet pipe communicating with the inlet pipe The water to be filtered can be introduced, and the outlet pipe is provided above the filter carrying device, and a plurality of sprinklers are provided； thereby, the present invention can have better filtering efficiency and oxygen content.本發明係一種立體式生物過濾系統，包括複數淨水籃、複數生物濾材、一灑水裝置，該每一淨水籃具側壁、底壁，中央具容置槽，上方具開口，又該側壁、底壁分別設置數透孔，又該各淨水籃排列令相鄰淨水籃之側壁靠近，又令各淨水籃疊積使上方淨水籃之底壁位於下方淨水籃之開口上方位置，並使複數淨水籃組成一過濾承載裝置；又該複數生物濾材設於淨水籃之容置槽內；又該灑水裝置具導入管及與導入管連通之導出管，該導入管可導入待過濾之水，又該導出管設於過濾承載裝置上方，並設置複數灑水口；藉此本發明可具較佳過濾功效及含氧率。
