High dissolved oxygen generator

The utility model belongs to the technical field of oxygen dissolving generators, and discloses a high dissolved oxygen generator. The device is mainly technically characterized by comprising a water pump, a straight pipe section and a reducing section, the reducing section comprises a conical convergence part, a cylindrical throat part and a conical diffusion section, an oxygen inlet communicated with an oxygen pipeline is formed in the side face of the cylindrical throat part, fixing discs with through holes in the middles are arranged at the two ends of the cylindrical throat part, and a breathable material pipe is connected between the two fixing discs; an air storage cavity is formed in the inner side of the cylindrical throat part on the outer side of the breathable material pipe. Preferably, the air-permeable material pipe is a pipe body which is surrounded by a polytetrafluoroethylene film which is air-permeable, cannot allow water molecules to pass through and has a sound sleep air-permeable property