Oxygenation device for aquarium fish culture

The utility model discloses an oxygenation device for aquarium fish culture. Comprising a base used for placing a fish tank, a filtering device fixed in the base and used for filtering water in the fish tank, an oxygenation assembly used for increasing the oxygen content in the water body, and a water pumping pipe installed on the fish tank and used for guiding the water in the fish tank into the water filtering device. The water conveying pipe is mounted on the fish tank and used for conveying water filled with oxygen in the oxygenation assembly into the fish tank, one end of the water conveying pipe is fixed on the base and connected with the filtering device, and the other end of the water conveying pipe is connected with the oxygenation assembly; the sewage suction cavity is fixed in the fish tank and fixedly connected with the end plate of the water pumping pipe to prevent fishes from being sucked into the water pumping pipe; and the impact cavity is fixed in the fish tank to relieve the impact force of