A　new　heat　mass　transfer　model　was　developed　to　predict　the　fouling　process　of　calcium　carbonate　on　heat　transfer　surface.　The　model　took　into　account　not　only　the　crystallization　fouling　but　also　the　particle　fouling　which　was　formed　on　the　heat　transfer　surface　by　the　suspension　particles　of　calcium　carbonate　in　the　supersaturated　solution.　Based　on　experimental　results　of　the　fouling　process,　the　deposition　and　removal　rates　of　the　mixing　fouling　were　expressed.　Furthermore,　the　coupling　effect　of　temperature　with　the　fouling　process　was　considered　in　the　physics　model.　As　a　result　the　fouling　resistance　varying　with　time　was　obtained　to　describe　the　fouling　process　and　the　prediction　was　compared　with　experimental　data　under　same　conditions.　The　results　showed　that　the　present　model　could　give　a　good　prediction　of　fouling　process,　and　the　deviation　was　less　than　15%　of　the　experimental　data　in　most　cases.　The　new　model　is　credible　to　predict　the　fouling　process.