The utility model discloses a deep sea fishing net cage. Net cage frame, Solar cell panel, Mesh wire and soft metal wire, longitudinal rods and transverse rods are uniformly arranged on the net cage frame; cross-shaped connecting pieces are arranged at the joints of the longitudinal rods and the transverse rods; Mesh wires are evenly arranged on the net cage frame. the edges of the net wires are respectively connected with the longitudinal rods and the transverse rods through binding wires; cameras are installed at the two ends of the bottom in the net cage frame, floating balls are installedat the top ends of the two sides of the net cage frame, traction chains are installed at the two ends of the bottom of the net cage frame, sinking anchors are installed at the bottom ends of the traction chains, and the output end of a solar cell panel is electrically connected with the input end of a storage battery through a photovoltaic controller. According to the net cage, the net wires are installed, the soft metal wires are evenly wound around the net wires, the strength of the net cage is higher, meanwhile, the silk floss is wound around the net wires, and therefore fish scales can beconveniently prevented from being scratched by the hard metal wires, and damage is avoided.