Taking　the　meteorological　data　in　Fuzhou　area　in　2011　as　an　example,　this　paper　investigate　the　seasonal　change　of　the　temperature　and　humidity　field　of　embankment　in　moist　heat　areas　based　on　the　finite　difference　technology　programmed　Moisture-heat　coupled　procedure.　The　results　show　that　the　highest　temperature　in　the　soil　surface　of　embankment　is　near　40°C　and　the　highest　temperature　gradient　is　up　to　0.22°C　/cm　in　summer.　The　lowest　temperature　is　near　10°C　and　the　highest　temperature　gradient　is　up　to　-0.21°C　/cm　in　winter.　Fluctuation　range　of　the　water　content　in　the　surface　of　the　embankment　(0cm~10cm)　is　between　3%　and　20%,　and　fluctuation　range　of　the　water　content　of　the　shallow　soil　layer　of　embankment　(10cm~50cm)　is　between　10%　and　20%,　and　the　water　content　in　the　deep　layer　of　embankment　(50cm~250cm)　changes　not　apparently　with　season.　If　the　temperature　gradient　of　soil　is　0°C　/cm　and　the　yearly　fluctuation　range　of　the　water　content　of　the　embankment　is　2%,　the　temperature　and　humidity　of　the　embankment　that　can　be　affected　by　the　climate　of　the　Fuzhou　area　is　in　the　depth　of　about　4.0m　and　2.5m　respectively.　©　(2014)　Trans　Tech　Publications,　Switzerland.