As　new　energy　technologies　boom　in　recent　years,　marine　renewable　energy,　especially　wave　power　is　one　potential　trend.　However,　few　relevant　studies　focus　on　extreme　sea　conditions.　In　this　paper,　a　numerical　model　of　typhoon　waves　in　the　Taiwan　Strait　is　established　based　on　the　third-generation　ocean　wave　model　SWAN　and　then　calculated　by　the　wave　energy　empirical　equation.　Typhoon　No.　200808　Fung-wong,　strong　typhoon　No.　200815　Jangmi　and　strong　typhoon　No.　201808　Maria　are　used　for　verification　and　analysis.　Finally,　the　results　show　that　most　concentrated　wave　energy　values　are　more　than　300　kW/m　for　typhoon　and　more　than　900　kW/m　for　strong　typhoons,　over　60　times　and　180　times　the　annual　average　(5　kW/m)　in　the　Chinese　sea　area,　respectively.　In　terms　of　other　locations,　corresponding　values　are　more　than　50　kW/m　and　over　100　kW/m.　Therefore,　typhoons＇　wave　energy　is　certainly　a　huge　asset　if　fully　utilized.