Submarine　pipelines　are　usually　buried　in　a　terrible　environment　and　are　subjected　to　all　kinds　of　environment　loadings,　in　which　wave　and　seismic　loadings　are　the　main　loadings.　In　this　paper,　the　dynamic　response　of　seabed　around　submarine　pipeline　subjected　to　the　combination　of　wave　and　seismic　actions　are　examined　by　numerical　analysis　method.　Based　on　numerical　examples,　it　can　be　concluded　that　the　effect　of　seismic　loading　on　the　pore　pressure　at　the　top　point　of　pipeline　is　more　slighter　than　that　at　the　bottom　point　when　wave　and　seismic　loadings　act　together.　But　when　wave　and　seismic　loading　together,　the　response　at　the　bottom　of　pipeline　is　obviously　bigger　than　that　at　the　top　of　pipeline　because　seismic　loading　acts　from　the　bottom　of　bedrock.　©　2014　ejge.