With　the　development　of　the　economy,　improving　energy　efficiency　and　saving　energy　have　become　important　issues　that　need　to　be　addressed.　In　terms　of　building　energy　efficiency,　combining　phase　change　heat　storage　material　with　floor　radiation　heating　is　an　effective　way　to　improve　energy　utilization　efficiency.　In　this　paper,　a　composite　phase　change　heat　storage　material　used　in　radiant　floor　heating　was　introduced.　Based　on　the　selected　materials,　experiments　on　floor　radiation　heating　system　based　on　heat　storage　in　different　environments　during　the　heating　season　were　conducted.　The　results　showed　that　thermal　conductivity　of　composite　phase　change　heat　storage　material　increased　by　a　maximum　of　97.2%,　and　the　maximum　heat　release　time　can　be　obtained　6　h.　By　using　this　radiant　floor　heating　system,　a　balance　between　heating　comfort　and　economy　has　been　achieved,　so　this　system　will　have　a　good　applied　foreground.