In order to improve the economic efficiency of floating offshore wind turbine and promote the development of distant sea fish cage aquaculture to deep sea, the floating offshore wind turbine integrated with a fish farming cage to meet the development needs of both. The intact stability of the structure is analyzed, and Morrison's bar is used to numerically simulate the mesh structure using the mesh group visualization algorithm, and the numerical simulation model is established using Sesam software. The results show that the mesh will optimize the stability of the platform, while the diameter of the side columns will affect the height of static stability, and increasing the diameter of the side columns within a certain range can optimize the stability of the structure.