Barge-type floating wind turbine is an important equipment for the development of offshore wind power， and its motion response can be effectively suppressed by a passive control device tuned mass damper (tuned mass damper， TMD). Based on the ITI Energy Barge wind turbine， this study designs a new Barge floating wind turbine foundation， establishes a wind turbine dynamic model configured with TMD in the platform， configures TMDs with different positions， masses， and damping parameters in the floating platform， and studies the change of the motion response of the floating wind turbine before and after the TMD with optimal parameters configured on the wind turbine platform under the action of wind and wave loads. The results show that after the TMD with a mass ratio of 3% and a damping ratio of 6% is configured on the top of the buoy in the new wind turbine platform， the front and rear and left and right displacements of the top of the wind turbine tower are reduced by 15.56% and 44.93% respectively. The pitch and roll suppression rate of the platform reaches 22.97% and 62.79%. The front and rear and left and right bending moments of the fan tower base are reduced by 15.62% and 39.8% respectively. At this time， the control effect of TMD is the best， and the overall stability of the wind turbine is greatly improved.