Floating/submerged plastic cage high productivity aquaculture system, exploited and produced by Zhoushan Dahyo Science& Technology Co. Ltd, is a modern and intensive model of fish aquaculture, which is developing at speed in the international world in recent years. This system can provide a complete and advanced equipment platform for fish aquaculture safely. Compared with the traditional floating/submerged plastic cage, it has the obvious advantages larger aquaculture capacity, deeper sea area, farther from the coast, much higher safety index, better environmental protection, much closer the wild ones of the quality of cultured fish. Which can turn the stable and industrialized production of sea fish aquaculture in realization.