Aiming at the application situation of XLPE insulated submarine cable in the field of China’s offshore wind power, firstly the typical applications of mid-voltage AC submarine cable to offshore wind farms are summarized. The technical breakthrough of three-core HVAC submarine cable, the structure improvement and performance upgrade in the developing process of cable voltage level from 35 kV to 110 kV and 220 kV are introduced. Fabricating costs are compared between three-core and one-core submarine cables. Then the product features and insulation structure design method of VSC-HVDC submarine cable are briefed. Finally, according to the trend of large capacity and high seas construction for future offshore wind farm, it is proposed that the application of XLPE insulated submarine cable should focus on wet type structure array submarine cable and VSC-HVDC submarine cable in the future.