Abstract:In this paper, the floating wind turbine system was researched based on former study. The sea environmental load analysis model and mooring system were established, based on which system dynamics analysis and load calculation was researched. Studies have shown that: floating platform has great influence on the vibration on wind turbine, under the same conditions suffered by floating wind turbine and fixed wind turbine, vibration on floating turbine changes in amplitude relatively large, which means reduction in fatigue life for floating wind turbine, therefore, the design method for the float wind turbine should be revised and improved.