Man-made structure for water treatment

A man-made structure for water treatment comprises stuffing packs, fixing devices and an underwater interface of the polluted water, wherein the stuffing packs are connected with the underwater interface of the polluted water through the fixing devices, the stuffing packs comprise bag type biological filler, filling base materials and bag mouth seals, the filling base materials are placed in the bag type biological filler, and the bag mouth seals are arranged at the openings of the bag type biological filler. The man-made structure for water treatment provided by the utility model is convenient to maintain and suitable for biological growth, can build a complete ecological system and has good treatment effects.