As a modern fishery model, Marine pasture has developed rapidly in the world in recent years, but it also faces the problems of fishery resource decline and ecological environment destruction. Based on the service characteristics and research status of deep-water cages, the paper proposes a multi-sea mobile service concept suitable for large-scale development. The joint probability distribution model was used to accurately analyze the environmental loads at three proposed locations in the typical pasture sea area, compare and verify the load effects, and give the environmental load sensitivity of the components at different levels of the cage, guiding the modular classification design of the structure. Ensure that the cage can be mobile and safe service to achieve self-purification and recovery of aquaculture sea areas, while improving the overall economy of Marine pastures.