Eight　interfacial　modifiers　were　used　to　improve　the　interfacial　bonding　strength　between　the　crumb　rubber　and　matrix　of　Crumb　Rubber　Mortar　(CRM),　and　the　physical　and　mechanical　properties　and　microstructure　of　CRM　were　also　studied.　The　results　show　that,　the　interfacial　modifiers　obviously　improve　the　interface　bonding　strength　between　the　crumb　rubber　and　matrix　and　the　whole　strength　of　CRM,　and　silicone　modified　styrene-acryl　ate-emulsion　has　the　best　effect.　The　rubber-cement　matrix　interface　was　proved　by　SEM　that　the　interfacial　modifiers　treated　rubber　showed　good　adhesion　to　the　matrix.