For high cost, hard grid connection and high failure probability of large-scale offshore wind power, a non-grid-connected diverse application system is proposed. Breaking the single on-grid application mode of large-scale offshore wind power, the system directly couples offshore wind power with high-energy consumption industries (such as seawater desalination, hydrogen production by water electrolysis and electrolytic aluminum, etc.) into a new and full one through the necessary technical innovation and integration. It uses offshore wind power and changes power transmission into product transmission ashore, which not only breaks the difficult problem of large-scale, super-large-scale wind power application but also saves the investment of offshore wind farms and increases the utilization efficiency of wind energy. As a result, the system is of great practical and strategic significance.