Abstract: Using disturbance accommodating control based on state-space of onshore wind turbines,and considering the freedom of floating offshore wind turbine support platform in the state-space,and using state estimator to evaluate the system state variables,to research the influence of different disturbances accommodating control of pitch on the control performance of floating offshore wind turbine and compare it with FAST baseline control. The results shows that floating offshore wind turbine pitch control design should be use disturbance accommodating control based on state-space method,and the support platform surge,pitch and yaw freedom should be considered in the state-space.