The invention provides a deep water net cage. The deep water net cage comprises a cage body, a netting and a base, wherein the cage body comprises multiple stand columns, the netting is connected withthe cage body, the base is arranged at the bottoms of the stand columns, the bottom ends of the stand columns penetrate through the base to be inserted into the seabed, and the base is located on theseabed. In the deep water net cage, the parts, inserted into the seabed, of the stand columns can effectively resist the function of most horizontal load of the net cage, besides, the bottom surfaceof the base makes contact with the surface of the seabed, and movement of the net cage in the horizontal direction can be resisted. Therefore, through mutual cooperation of the stand columns and the base, the cage body can be stably located on the seabed.