Background  Due to the depletion of global marine fishery resources and the increasing pressure of fishing, traditional cage culture is limited by space and cannot meet the urgent needs of human beings for seafood. Gravity deep water cage culture can make better use of marine fishery resources, which is one of the important ways to solve this problem.

Progress  Therefore, this paper analyzes the development of gravity deep-water cage in China, describes the research direction and application of gravity deep-water cage, and prospects its future. So far, China’s gravity deep-water cage technology has made great progress, and some achievements such as rope mesh materials, aquaculture supporting equipment and aquaculture technology have been industrialized. Outlook At the same time, China’s gravity deep water cages need to continue to innovate and improve in terms of cage structure and materials, intelligent management and green aquaculture technology, in order to promote the high-quality development of deep water cages.

Significance The development of China’s gravity deep-water cage not only helps to alleviate the pressure of offshore cage farming, but also promotes the transformation and upgrading of China’s marine cage farming industry, and contributes to the prosperity of China’s aquaculture industry and the protection of the marine ecological environment.