Abstract: In order to improve the stability of the floating platform,this paper takes the Barge-type floating wind turbine as the research object,and establishes a floating wind farm with 3×3 array Barge of Common mooring system.Based on the blade element momentum theory,the dynamic response of Barge-type floating wind farm and a single Barge platform considering wind-wave coupling under extreme sea conditions are compared by using hydrodynamic software AQWA,combined with finite element method.The results show that the surge response of each platform in the wind farm is smaller than that of a single Barge platform,and irregular sway motion occurs on both sides of the wind farm,but they are also smaller;Secondly,the heave,pitch and nacelle acceleration responses of the Barge-type floating wind farm are better than that of single Barge platform;At the same time,all platforms in the wind farm show good yaw and roll stability,and the fluctuation range does not exceed 2 degrees.The research results validate the feasibility of establishing Barge-type floating wind farm,and provide theoretical basis for further research on new floating wind farm.