Suction　buckets　are　widely　used　as　foundations　for　offshore　wind　turbines　because　of　its　many　advantages　such　as　simple　structure,　convenient　installation,　low　construction　cost　and　reusable.　It　is　very　essential　to　perform　the　seismic　response　analysis　of　suction　bucket　foundations　for　the　design　of　offshore　wind　turbines.　However,　the　related　research　is　still　relatively　rare.　In　this　research,　three-dimensional　finite　element　analysis　is　performed　to　predict　seismic　responses　of　suction　buckets　for　offshore　wind　turbines　in　clays　by　using　a　simplified　kinematic　hardening　constitutive　model　available　in　the　Abaqus　library.　The　seismic　bearing　mechanism　of　bucket　foundation　in　clays　is　investigated,　and　various　factors　affecting　seismic　responses　of　suction　bucket　are　analyzed,　including　the　soil　strength,　seismic　intensity　and　frequency,　and　bucket　geometry.　The　research　results　can　provide　a　reference　for　the　seismic　design　of　suction　bucket　foundations　for　offshore　wind　turbines.