Using　the　WRF　model　and　NCEP　data,　a　typical　winter　sea-land　breeze　progress　in　China　tropical　island　was　simulated,　analyzing　the　impact　of　wind　field　simulation　with　the　horizontal　resolution,　analog　range,　nesting　level,　and　analog　time.　The　results　showed:　the　simulate　effects　of　the　WRF　model　could　not　always　keep　step　with　the　increase　of　horizontal　resolution.　Obviously　there　was　a　threshold　for　the　model　horizontal　resolution.　By　the　same　token,　analog　range,　nesting　level,　and　analog　time　have　its　threshold.　The　accuracy　of　the　simulation　reduced　when　the　threshold　values　were　exceeded.　©　(2013)　Trans　Tech　Publications,　Switzerland.