We　analyzed　land　surface　temperature　(LST)　fluctuation　characteristics　in　urbanization　based　on　retrieval　of　LST,　profile　analysis　and　model　construction　in　the　wetland　distribution　area　of　Minjiang　River.　The　results　showed　that:　(1)　Dramatic　changes　in　land　use/land　cover　had　occurred　from　1993　to　2016　in　this　area.　The　area　of　water,　forest,　grassland,　cropland,　and　wetland　decreased,　while　the　built-up　land　increased.　Especially,　the　area　of　wetland　decreased　from　37.00　km2　to　29.15　km2.　(2)　The　LST　varied　with　different　land　use　types.　For　instance,　built-up　land　and　bare　land　had　positive　contribution　on　LST　rise,　while　waters,　forest,　grassland,　and　wetland　had　opposite　effects.　The　LST　increased　during　wetland　deterioration,　which　had　a　negative　impact　on　cooling　effect.　(3)　The　urban　expansion　transformed　wetland　to　built-up　land,　which　played　a　key　role　in　the　fluctuation　of　LST.　(4)　There　was　a　negative　correlation-between　LST　and　normalized　difference　vegetation　index　(NDVI)　and　normalized　difference　moisture　index　(NDMI),　and　a　positive　correlation　between　LST　and　normalized　difference　impervious　surface　index　(NDISI).　(5)　The　NDMI　and　NDISI　played　a　greater　role　in　LST　than　did　NDVI.　The　results　would　be　helpful　in　estuarine　wetland　conservation　in　the　future.　©　2018,　Editorial　Board　of　Chinese　Journal　of　Ecology.　All　rights　reserved.