The utility model discloses a three -dimensional electrolytic reaction ware of fluidized bed photocatalysis belongs to sewage treatment technical field. Three -dimensional electrolytic reaction ware of fluidized bed photocatalysis including the electrolysis trough, sets up negative pole, positive pole and mosaic electrode in the electrolysis trough to and DC power supply, the electrolysis trough includes that the solid -liquid separation that the hourglass hopper -shaped on upper portion was distinguished in the electrolytic reaction to cylindric electrolytic reaction district, rigid coupling distinguishes, connects in the water distribution gas distribution district of electrolytic reaction district lower part, the negative pole is cylindric stainless steel meshwork, arranges along the inner wall surrounding in electrolytic reaction district, the positive pole is a thin wall stainless steel round section of thick bamboo, and the tubulose ultraviolet lamp light exposure region in the stainless steel round section of thick bamboo is light catalytic reaction zone, the mosaic electrode is spheroidal particle light catalytic electrode. The three -dimensional electrolytic reaction ware of fluidized bed photocatalysis who is used for difficult degradation organic wastewater, have treatment effeciency height, operation advantage such as stable, wide market perspective has in the aspect of difficult degradation high salinity organic wastewater.