The measured data of the Bohai Sea No.18 ice coverage area was selected, and a wind turbine model was established based on the NREL 5 mW monopile offshore wind turbine (OWT) structure by ANSYS finite element software. The vibration reduction effects of tuned mass dampers (TMDs) and bidirectional tuned mass dampers (B-TMDs) on the bidirectional vibration response of monopile OWT structures under the combined action of wind, sea ice, and ocean current loads were analyzed. The results indicate that B-TMD can play a bidirectional control role for the tower and reduce the vibration responses of the wind turbine tower both outside and inside the plane, and it has a better control effect on the tower cylinder.The control effect of B-TMD on the out-of-plane and in-plane displacements at the top of the tower improves with the increase of the mass ratio and is not greatly affected by the wind-ice angle. The robustness of B-TMD is relatively poor, and the distribution of damper parameters inside and outside the plane can easily affect the control effects. When damper parameters inside and outside the plane are the same, the B-TMD could exert optimal control effects.