Traditional　fuel　is　increasingly　exhausted,　and　environmental　problems　are　becoming　more　and　more　serious.　Therefore,　the　development　and　utilization　of　low　carbon,　energy　saving　and　green.　Renewable　energy　is　the　theme　of　energy　development　in　today＇s　era.　Wave　energy　has　a　high　energy　density　and　little　energy　loss　during　its　propagation.　In　this　paper,　the　force　analysis　of　wave　energy　devices　under　different　states　is　carried　out,　and　the　mathematical　model　is　established　to　maximize　the　energy　conversion　efficiency　of　wave　energy　devices.　The　model　established　in　this　paper　accords　with　the　physical　law,　and　the　results　obtained　are　in　line　with　the　objective　reality.　The　output　power　of　the　wave　energy　device　in　one　cycle　is　relatively　ideal.　©　2023　IEEE.