In　recent　years,　most　of　the　research　on　typhoon　in　Fujian　Province　of　China　has　stayed　in　the　typhoon　wave　simulation　under　the　influence　of　wind　fields.　In　order　to　study　the　influence　of　land　terrain　on　typhoon　wave　fields,　the　terrain　height　parameters　are　introduced　into　the　wind　field　simulation　through　the　third-generation　typhoon　wave　numerical　model.　The　numerical　simulation　results　of　the　model　are　verified　and　analyzed　by　referring　to　the　data　of　significant　wave　height　and　wind　speed　of　typhoon　Fung-wong　(200808)　and　typhoon　Jangmi　(200815)　when　it　is　across　Taiwan　Island.　The　results　show　that　the　relative　error　of　the　maximum　wind　speed　and　the　significant　wave　height　is　reduced　after　the　wind　field　optimization,　which　is　more　consistent　with　the　observed　data.　The　model　accuracy　is　improved　after　optimization;　Typhoon　Fung-Wong,　which　crossed　Taiwan,　showed　the　most　significant　reduction　in　wind　speed.　Significant　wave　height　is　positively　correlated　with　wind　speed.　The　wave　height　distribution　shows　a　gradually　decreasing　trend　from　the　cyclone　center　to　the　coast,　and　the　significant　wave　heights　of　the　typhoon　moving　direction　show　pronounced　asymmetry.　Affected　by　the　land　topography,　the　distribution　of　significant　wave　height　generally　shows　a　downward　trend,　and　the　area　of　height　water　level　area　decreases.