In order to improve the economic efficiency of the 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 is used to meet the development needs of both. The intact stability of the structure is analyzed. 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. According to the American Bureau of Shipping (ABS) regulations, the structural intact stability under different wind incident angles of operating conditions are evaluated, and the tilt axis corresponding to the 0 ° incident direction is determined to be the most unfavorable tilt axis for the structural intact stability. The influence of the mesh and side column diameter on the platform stability is studied separately. 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 certain range can optimize the stability of the structure.