An　increasing　number　of　offshore　wind　turbines　(OWTs)　are　constructed　globally　because　of　their　capability　of　producing　clean　and　green　energy.　Many　of　these　structures　located　have　already　been　or　will　continue　to　be　constructed　in　the　earthquake-prone　areas　with　the　possibility　of　soil　liquefaction.　The　hybrid　pile-bucket　foundation　consists　of　a　traditional　monopile　and　a　wide-shallow　bucket　and　is　an　innovative　foundation　when　used　to　support　OWTs.　The　dynamic　behavior　of　the　hybrid　pile-bucket　foundation　supporting　the　OWTs　in　liquefiable　soils　under　earthquake　loads　is　investigated　in　the　present　study.　In　order　to　further　explore　the　superiority　of　the　hybrid　foundation,　two　three-dimensional　(3D)　numerical　models　of　a　5-MW　offshore　wind　turbine　supported　by　monopile　and　pile-bucket　foundation　in　the　liquefiable　soils　are　established　respectively　based　on　the　open-source　software　platform　OpenSees.　The　liquefiable　soils　are　discretized　by　brick　u-p　elements　and　its　constitutive　behavior　is　modelled　using　PDMY02　material　model　in　OpenSees.　The　seismic　responses　of　the　OWTs　under　two　ground　motion　records　with　different　peak　accelerations　and　frequency　components　are　investigated　in　this　study.　The　results　indicate　that　the　hybrid　pile-bucket　foundation　can　significantly　decrease　the　seismic　responses　of　the　OWTs　and　increase　the　liquefaction　resistance　of　the　surrounding　seabed,　compared　with　monopile　foundation.