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A modularized automatic lifting type intelligent deep-sea cage was presented. The objective was to improve the deep-sea cages cultivation volume and its ability to resist strong storm attacks. The cage was facilitated a high-efficiency assembly process and a convenient replacement of old components, in particular in the absence of large-scale installation equipment. A 1.5×104m3 cage was taken as a research example. Based on theoretical prediction, modeling and simulation, the lifting states of cages in sea storm conditions were compared, the force and fluid analysis of the main components were carried out, and the cage’s balancing during the lifting process was realized. The simulation result showed that when the cage kept its normal position near the water surface during sea storm, the highest pressure (from the storm) on the cage would be up to 2.58×108N/m2, which exceeded the yield strength of the cage’s steel, leading to a cage deformation and even damage. On the other hand, when the cage was dropped to 10m below the sea surface, the pressure would be decreased to 13% of its peak value. The lifting method can greatly reduce the forces on the cages and their deformation. The balanced lifting of the cage can be realized through multi-layer and multi-section intelligent control. This cage overcame several problems of traditional counterparts, including poor resistance to wind and wave, inconvenient production and transportation, limited cage volumes, insufficient stability in use, and low degree of intelligence. Therefore, it can meet the needs of large-scale deep-sea aquaculture in terms of production cost, transportation, assembly, maintenance and other aspects. The research result provided a theoretical basis for the design of different demand, high-sea conditions, and large-scale deep-water cages, leading to a reasonable solution for large-scale deep-sea aquaculture projects, and showing certain values in engineering applications.