The invention belongs to the technical field of net cleaning, and relates to a culture net cage capable of automatically cleaning a net. The culture net cage comprises a culture net cage, wherein a fixing frame fixed to the seabed is arranged around the culture net cage, and the fixing frame is in sliding connection with the culture net cage up and down; and a plurality of brush frames are arranged between the fixing frame and the culture net cage, one side of each the brush frame is fixed on the fixing frame, the other side faces the culture net cage, and brushes contacting with the net of the culture net cage are arranged on the side surface. The culture net cage has the advantages that the tidal energy is effectively utilized to realize automatic cleaning of the net, and the structuralstrength of the culture net cage is improved at the same time.