As　a　late-model　heating　technique,　radiant　floor　heating　is　much　more　energy-efficient　as　compared　to　the　conventional　air-conditioning　system.　For　the　sake　of　inner　temperature　distribution　of　the　configuration,　a　steady　three-dimensional　model　was　performed　based　on　the　CFD　software-CFX.　On　the　basis　of　temperature　distribution　of　the　radiant　floor,　the　total　quantity　of　heat　transferred　can　be　calculated.　It　is　observed　that　most　heat　quantity　of　heating　water　transferred　to　the　concrete　packing　layer　and　the　floor　so　as　to　heat　the　room.