Abstract: The running water cage culture of freshwater fish water environment, water cage culture model of water quality, algae and fecal residue were researched, the results showed that the water floating cage culture model could effectively reduce the contens of N,P, and the solid-state forms of freshwater fish breeding water environment, and could effectively reduce the stool eluvial speed, then accelerating the purification of the water environment. It told us that running water cage culture was an advanced modern freshwater fish breeding patterns, and provided a reference for further research and extension of running water cage culture.